学生成绩的文件管理c
❶ 学生成绩管理系统C语言代码
#include"stdio.h"
#include<string.h>
#include<stdlib.h>
#define N 30
struct student
{
int num;
char name[20];
int age;
int Math;
int English;
int Physical;
long int sum;
}stu[N];
enter()
{int i,n;
printf("How many students(1-%d)?:",N);
scanf("%d",&n);
printf("\nEnter data now\n\n");
for(i=0;i<n;i++)
{printf("\n Input %dth student record.\n",i+1);
input(i);
}
if(i!=0) save(n);
printf_back(); /* browse or back */
}
add()
{int i,n,m,k;
FILE *fp;
n=load();
printf("How many students are you want to add(1-%d)?:",N-n);
scanf("%d",&m);
k=m+n;
for(i=n;i<k;i++)
{printf("\n Input %dth student record.\n",i+1);
input(i);
}
if((fp=fopen("score.txt","ab"))==NULL)
{printf("Cannot open file.\n");
}
for(i=n;i<k;i++)
if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
printf("file write error.\n");
fclose(fp);
printf_back();
}
/* insert()
{int n,c;
struct student s;
n=load();
puts("\n Input one data.\n");
do
{input(n);
printf_face();
printf_one(n);
printf("\n\nAre you sure?\n\n\t 1.Sure\t2.cancel and again\t3.Back without save [ ]\b\b");
scanf("%d",&c);
if(c==1)
{
save(n+1);
printf_back();
}
else if(c!=2) menu();
}
while(c==2);
} */
modify()
{struct student s;
FILE *fp;
int i,n,k,w0=1,w1,w2=0;
n=load();
do
{
k=-1;
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nRemember NO.031073- which needed modify.Pass any key to continue ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
do
{printf("\n\nEnter NO.031073- that you want to modify! NO.:031073-");
scanf("%d",&s.num);
for(i=0;i<n;i++)
if(s.num==stu[i].num)
{k=i;
s=stu[i]; /* chengji beifei */
}
if(k==-1) printf("\n\nNO exist!please again");
}
while(k==-1);
printf_face();
printf_one(k);
w1=modify_data(k,n);
if(w1==1)
{printf("\nSuccessful ^_^.\n\nAre you modify another?\n\n\t1.Yes2.Back with save\t[ ]\b\b");
scanf("%d",&w0);
w2=1;
}
else
{w0=0; /* end */
if(w2==1)
stu[k]=s;
}
if(w0!=1&&w2==1) save(n); /* w0!=1 return w2==1 modify */
}
while(w0==1);
menu();
}
delete()
{struct student s;
FILE *fp;
int i,n,k,w0=1,w1,w2=0;
n=load();
do
{
k=-1;
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nRemember NO.031073- which needed delete.Pass any key to continue ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
do
{printf("\n\nEnter NO.031073- that you want to delete! NO.:031073-");
scanf("%d",&s.num);
for(i=0;i<n;i++)
if(s.num==stu[i].num)
{k=i;
s=stu[i]; /* chengji beifei */
}
if(k==-1) printf("\n\nNO exist!please again");
}
while(k==-1);
printf_face();
printf_one(k);
printf("\nAre you sure?\n\n\t1.Sure2.Back without save in this time [ ]\b\b");
scanf("%d",&w1);
if(w1==1)
{
stu[k].sum=0;
printf("\nSuccessful ^_^.\n\nAre you delete another?\n\n\t1.Yes2.Back with save\t[ ]\b\b");
scanf("%d",&w0);
w2=1;
}
else
{w0=0; /* end */
if(w2==1)
stu[k]=s;
}
if(w0!=1&&w2==1) save(n);
}
while(w0==1);
menu();
}
modify_score()
{struct student s;
FILE *fp;
int i,n,k,w0=1,w1,w2=0;
n=load();
do
{
k=-1;
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nRemember NO.031073 which score needed modify.Pass any key to continue ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
do
{printf("\n\nEnter NO.031073- that you want to modify! NO.:031073-");
scanf("%d",&s.num);
for(i=0;i<n;i++)
if(s.num==stu[i].num)
{k=i;
s=stu[i]; /* chengji beifei */
}
if(k==-1) printf("\n\nNO exist!please again");
}
while(k==-1);
printf_face();
printf_one(k);
w1=modify_score1(k);
if(w1==1)
{printf("\nSuccessful ^_^.\n\nAre you modify another score?\n\n\t1.Yes2.Back with save\t[ ]\b\b");
scanf("%d",&w0);
w2=1;
}
else
{w0=0; /* end */
if(w2==1)
stu[k]=s;
}
if(w0!=1&&w2==1) save(n); /* w0!=1 return w2==1 modify */
}
while(w0==1);
menu();
}
order()
{int i,j,k,n;
struct student s;
n=load();
for(i=0;i<n-1;i++)
{k=i;
for(j=i+1;j<n;j++)
if(stu[j].num<stu[k].num) k=j;
s=stu[i];stu[i]=stu[k];stu[k]=s;
}
save(n);
puts("\n\n");
printf_back();
}
browse()
{int i,j,n;
n=load();
printf_face();
for(i=0;i<n;i++)
{if((i!=0)&&(i%10==0))
{printf("\n\nPass any key to contiune ...");
getch();
puts("\n\n");
}
printf_one(i);
printf("\n");
}
printf("\tThere are %d record.\n",n);
printf("\nPass any key to back...");
getch();
menu();
}
save(int n)
{FILE *fp;
int i;
if((fp=fopen("score.txt","wb"))==NULL)
{printf("\nCannot open file\n");
return NULL;
}
for(i=0;i<n;i++)
if(stu[i].sum!=0)
if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
printf("file write error\n");
fclose(fp);
}
load()
{FILE *fp;
int i;
if((fp=fopen("score.txt","rb"))==NULL)
{printf("\nCannot open file\n");
return NULL;
}
for(i=0;!feof(fp);i++)
fread(&stu[i],sizeof(struct student),1,fp);
fclose(fp);
return(i-1);
}
no_input(int i,int n)
{int k,w1;
do
{w1=0;
printf("NO.:031073-");
scanf("%d",&stu[i].num);
if(stu[i].num<1 || stu[i].num>N)
{puts("Input error! Only be made up of(1-N).Please reinput!\n");
w1=1;
}
if(w1!=1)
for(k=0;k<n;k++)
if(k!=i&&(stu[k].num==stu[i].num))
{puts("This record is exist. Please reinput!\n");
w1=1;break;
}
}
while(w1==1);
}
enter_score(int i)
{printf("Math English Physical");
scanf("%d %d %d",&stu[i].Math,&stu[i].English,&stu[i].Physical);
}
sum(int i)
{
stu[i].sum=stu[i].Math+stu[i].English+stu[i].Physical;
}
input(int i)
{no_input(i,i);
printf("name: age:");
scanf("%s %d",stu[i].name,&stu[i].age);
enter_score(i);
sum(i);
}
modify_score1(int i)
{int c,w1;
do
{
puts("\nmodify by=>\n\n 1.Math 2.English 3.Physical4.all score 5.cancel and back");
printf("Which you needed?:[ ]\b\b");
scanf("%d",&c);
if(c>5||c<1)
{puts("\nChoice error! Please again!");
getchar();
}
}
while(c>5||c<1);
do
{switch(c)
{
case 1:printf("Math:");scanf("%d",&stu[i].Math);break;
case 2:printf("English:");scanf("%d",&stu[i].English);break;
case 3:printf("Physical:");scanf("%d",&stu[i].Physical);break;
case 4:enter_score(i);break;
case 5:break;
}
if(c>0&&c<5) sum(i);
puts("\nNow:\n");
printf_face();
printf_one(i);
printf("\nAre you sure?\n\n\t1.Sure 2.No and remodify3.Back without save in this time [ ]\b\b");
scanf("%d",&w1);
}
while(w1==2);
return(w1);
}
modify_data(int i,int n)
{int c,w1;
do
{
puts("\nmodify by=>\n\n 1.NO. 2.name 3.age 4.Math 5.English 6.Physical7.all score 8.all data 9.cancel and back");
printf("Which you needed?:[ ]\b\b");
scanf("%d",&c);
if(c>9||c<1)
{puts("\nChoice error! Please again!");
getchar();
}
}
while(c>9||c<1);
do
{switch(c)
{case 1:no_input(i,n);break;
case 2:printf("name:");scanf("%s",stu[i].name);break;
case 3:printf("age:");scanf("%d",&stu[i].age);break;
case 4:printf("Math:");scanf("%d",&stu[i].Math);break;
case 5:printf("English:");scanf("%d",&stu[i].English);break;
case 6:printf("Physical:");scanf("%d",&stu[i].Physical);break;
case 7:enter_score(i);break;
case 8:input(i);break;
case 9:break;
}
if(c>3&&c<8) sum(i);
puts("\nNow:\n");
printf_face();
printf_one(i);
printf("\nAre you sure?\n\n\t1.Sure 2.No and remodify3.Back without save in this time [ ]\b\b");
scanf("%d",&w1);
}
while(w1==2);
return(w1);
}
printf_face()
{printf("\nNO.031073 name age Math English Physical sum\n");
}
printf_one(int i)
{
printf("%6d %8s %4d",stu[i].num,stu[i].name,stu[i].age);
printf("%5d %5d %8d %10d",stu[i].Math,stu[i].English,stu[i].Physical,stu[i].sum);
}
printf_back()
{int k,w;
printf("\n\n\tSuccessful.^_^\n\n");
printf("What do you want to do?\n\n\t1.Browse all now\t2.Back:[ ]\b\b");
scanf("%d",&w);
if(w==1) browse();
else menu();
}
menu()
{int w1;
char n;
do
{
puts("\t\t****************MENU****************\n\n");
puts("\t\t\t\tA.Enter new data");
puts("\t\t\t\tB.Addition data");
puts("\t\t\t\tC.Modify data");
puts("\t\t\t\tD.Delete data");
puts("\t\t\t\tE.Modify score");
puts("\t\t\t\tF.Order by number");
puts("\t\t\t\tG.Browse all");
puts("\t\t\t\tH.Exit");
puts("\n\n\t\t************************************\n");
printf("Choice your number(A-H):[ ]\b\b");
n=getchar();
printf("\n");
if(n<'A'||n>'H')
w1=1;
else w1=0;
}
while(w1==1);
switch(n)
{case 'A':enter();break;
case 'B':add();break;
case 'C':modify();break;
case 'D':delete();break;
case 'E':modify_score();break;
case 'F':order();break;
case 'G':browse();break;
case 'H':exit(0);
}
}
char password[7]="123456";
main()
{
char s[7];
printf("\t\t请输入密码:\n\t\t\n\t\t");
scanf("%s",s);
if(!strcmp(s,password))
{
printf("\n\t\t恭喜你进入学生成绩管理系统\n");
menu();
}
else
{
printf("\t\t 密码错误\n\n");
main();
}
}
❷ C语言学生成绩管理系统 怎么用文件排序
文件是用来保存数据的，是无法用文件来进行排序的。应该从文件中把数据读入到链表或数组中，再用数组或链表结构进行排序。
typedef struct/*学生结构体*/
{
char num[10]; /*学生学号*/
char name[20]; /*学生姓名*/
char sex[4];/*学生性别*/
int year,month,day;/*出生年月日*/
char face[4];/*政治面貌*/
float math,gaoji,dianlu,aver; /*数学分析，高级语言程序设计，电路与电子学成绩*/
}Student;
Student stu[30];
void paixu_xuehao(Student stud[],int n) /*按学号排序*/
{ float p,q,w;
int i,j,r,g,h;
double y;
char x[20],t[10],z[10];
for(i=0;i<n-1;i++) /*冒泡法排序*/
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{ strcpy(t,stud[j].num);strcpy(stud[j].num,stud[j+1].num);strcpy(stud[j+1].num,t);
strcpy(x,stud[j].name);strcpy(stud[j].name,stud[j+1].name);strcpy(stud[j+1].name,x);
r=stu[j].year;stu[j].year=stu[j+1].year;stu[j+1].year=r;
g=stu[j].month;stu[j].month=stu[j+1].month;stu[j+1].month=g;
h=stu[j].day;stu[j].day=stu[j+1].day;stu[j+1].day=h;
strcpy(z,stud[j].face);strcpy(stud[j].face,stud[j+1].face);strcpy(stud[j+1].face,z);
y=stu[j].aver;stu[j].aver=stu[j+1].aver;stu[j+1].aver=y;
p=stu[j].math;stu[j].math=stu[j+1].math;stu[j+1].math=p;
q=stu[j].gaoji;stu[j].gaoji=stu[j+1].gaoji;stu[j+1].gaoji=q;
w=stu[j].dianlu;stu[j].dianlu=stu[j+1].dianlu;stu[j+1].dianlu=w;
}
return;
}
int wenjian2(Student stu[],int n) /*从文件中读入数据*/
{
int i=0;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename); /*输入文件名*/
if((fp=fopen(filename,"rb"))==NULL) /*打开文件*/
{ printf("\t\t\tcann't open the file\n"); /*打开失败信息*/
printf("\t\t\t");
}
fread(&stu[i],sizeof(Student),1,fp);
while(!feof(fp))fread(&stu[i++],sizeof(Student),1,fp);
fclose(fp); /*关闭文件*/
printf("\t\t\tSuccessed!\n");
printf("\t\t\t");
system("pause");
return(i);
}
❸ C语言学生成绩管理程序
#include"stdio.h"
/*定义学生结构体*/
structStudent
{
charID[20];
charName[20];
floatMark1;
floatMark2;
floatMark3;
floatAverage;
};
/*声明学生数组及学生数量*/
structStudentstudents[1000];
intnum=0;
/*求平均值*/
floatAvg(structStudentstu)
{
return(stu.Mark1+stu.Mark2+stu.Mark3)/3;
}
/*通过学号返回数组下标*/
intStudent_SearchByIndex(charid[])
{
inti;
for(i=0;i<num;i++)
{
if(strcmp(students[i].ID,id)==0)
{
returni;
}
}
return-1;
}
/*通过姓名返回数组下标*/
intStudent_SearchByName(charname[])
{
inti;
for(i=0;i<num;i++)
{
if(strcmp(students[i].Name,name)==0)
{
returni;
}
}
return-1;
}
/*显示单条学生记录*/
voidStudent_DisplaySingle(intindex)
{
printf("%10s%10s%8s%8s%8s%10s ","学号","姓名","成绩","成绩","成绩","平均成绩");
printf("------------------------------------------------------------- ");
printf("%10s%10s%8.2f%8.2f%8.2f%10.2f ",students[index].ID,students[index].Name,
students[index].Mark1,students[index].Mark2,students[index].Mark3,students[index].Average);
}
/*插入学生信息*/
voidStudent_Insert()
{
while(1)
{
printf("请输入学号:");
scanf("%s",&students[num].ID);
getchar();
printf("请输入姓名:");
scanf("%s",&students[num].Name);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark1);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark2);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark3);
getchar();
students[num].Average=Avg(students[num]);
num++;
printf("是否继续?(y/n)");
if(getchar()=='n')
{
break;
}
}
}
/*修改学生信息*/
voidStudent_Modify()
{
floatmark1,mark2,mark3;
while(1)
{
charid[20];
intindex;
printf("请输入要修改的学生的学号:");
scanf("%s",&id);
getchar();
index=Student_SearchByIndex(id);
if(index==-1)
{
printf("学生不存在! ");
}
else
{
printf("你要修改的学生信息为: ");
Student_DisplaySingle(index);
printf("--请输入新值-- ");
printf("请输入学号:");
scanf("%s",&students[index].ID);
getchar();
printf("请输入姓名:");
scanf("%s",&students[index].Name);
getchar();
printf("请输入成绩:");
scanf("%f",&students[index].Mark1);
getchar();
printf("请输入成绩:");
scanf("%f",&students[index].Mark2);
getchar();
printf("请输入成绩:");
scanf("%f",&students[index].Mark3);
getchar();
students[index].Average=Avg(students[index]);
}
printf("是否继续?(y/n)");
if(getchar()=='n')
{
break;
}
}
}
/*删除学生信息*/
voidStudent_Delete()
{
inti;
while(1)
{
charid[20];
intindex;
printf("请输入要删除的学生的学号:");
scanf("%s",&id);
getchar();
index=Student_SearchByIndex(id);
if(index==-1)
{
printf("学生不存在! ");
}
else
{
printf("你要删除的学生信息为: ");
Student_DisplaySingle(index);
printf("是否真的要删除?(y/n)");
if(getchar()=='y')
{
for(i=index;i<num-1;i++)
{
students[i]=students[i+1];
}
num--;
}
getchar();
}
printf("是否继续?(y/n)");
if(getchar()=='n')
{
break;
}
}
}
/*按姓名查询*/
voidStudent_Select()
{
while(1)
{
charname[20];
intindex;
printf("请输入要查询的学生的姓名:");
scanf("%s",&name);
getchar();
index=Student_SearchByName(name);
if(index==-1)
{
printf("学生不存在! ");
}
else
{
printf("你要查询的学生信息为: ");
Student_DisplaySingle(index);
}
printf("是否继续?(y/n)");
if(getchar()=='n')
{
break;
}
}
}
/*按平均值排序*/
voidStudent_SortByAverage()
{
inti,j;
structStudenttmp;
for(i=0;i<num;i++)
{
for(j=1;j<num-i;j++)
{
if(students[j-1].Average<students[j].Average)
{
tmp=students[j-1];
students[j-1]=students[j];
students[j]=tmp;
}
}
}
}
/*显示学生信息*/
voidStudent_Display()
{
inti;
printf("%10s%10s%8s%8s%8s%10s ","学号","姓名","成绩","成绩","成绩","平均成绩");
printf("------------------------------------------------------------- ");
for(i=0;i<num;i++)
{
printf("%10s%10s%8.2f%8.2f%8.2f%10.2f ",students[i].ID,students[i].Name,
students[i].Mark1,students[i].Mark2,students[i].Mark3,students[i].Average);
}
}
/*将学生信息从文件读出*/
voidIO_ReadInfo()
{
FILE*fp;
inti;
if((fp=fopen("Database.txt","rb"))==NULL)
{
printf("不能打开文件! ");
return;
}
if(fread(&num,sizeof(int),1,fp)!=1)
{
num=-1;
}
else
{
for(i=0;i<num;i++)
{
fread(&students[i],sizeof(structStudent),1,fp);
}
}
fclose(fp);
}
/*将学生信息写入文件*/
voidIO_WriteInfo()
{
FILE*fp;
inti;
if((fp=fopen("Database.txt","wb"))==NULL)
{
printf("不能打开文件! ");
return;
}
if(fwrite(&num,sizeof(int),1,fp)!=1)
{
printf("写入文件错误! ");
}
for(i=0;i<num;i++)
{
if(fwrite(&students[i],sizeof(structStudent),1,fp)!=1)
{
printf("写入文件错误! ");
}
}
fclose(fp);
}
/*主程序*/
main()
{
intchoice;
IO_ReadInfo();
while(1)
{
/*主菜单*/
printf(" ------学生成绩管理系统------ ");
printf("1.增加学生记录 ");
printf("2.修改学生记录 ");
printf("3.删除学生记录 ");
printf("4.按姓名查询学生记录 ");
printf("5.按平均成绩排序 ");
printf("6.退出 ");
printf("请选择(1-6):");
scanf("%d",&choice);
getchar();
switch(choice)
{
case1:
Student_Insert();
break;
case2:
Student_Modify();
break;
case3:
Student_Delete();
break;
case4:
Student_Select();
break;
case5:
Student_SortByAverage();
Student_Display();
break;
case6:
exit();
break;
}
IO_WriteInfo();
}
}
❹ 学生成绩管理（C语言）
#include<stdio.h> /*引用库函数*/
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
typedef struct /*定义结构体数组*/
{
char num[10]; /*学号*/
char name[20]; /*姓名*/
int score; /*成绩*/
}Student;
Student stu[80]; /*结构体数组变量*/
int menu_select() /*菜单函数*/
{
char c;
do{
system("cls"); /*运行前清屏*/
printf("\t\t****Students' Grade Management System****\n"); /*菜单选择*/
printf("\t\t | 1. Input Records |\n");
printf("\t\t | 2. Display All Records |\n");
printf("\t\t | 3. Sort |\n");
printf("\t\t | 4. Insert a Record |\n");
printf("\t\t | 5. Delete a Record |\n");
printf("\t\t | 6. Query |\n");
printf("\t\t | 7. Statistic |\n");
printf("\t\t | 8. Add Records from a Text File|\n");
printf("\t\t | 9. Write to a Text file |\n");
printf("\t\t | 0. Quit |\n");
printf("\t\t*****************************************\n");
printf("\t\t\tGive your Choice(0-9):");
c=getchar(); /*读入选择*/
}while(c<'0'||c>'9');
return(c-'0'); /*返回选择*/
}
int Input(Student stud[],int n) /*输入若干条记录*/
{int i=0;
char sign,x[10]; /*x[10]为清除多余的数据所用*/
while(sign!='n'&&sign!='N') /*判断*/
{ printf("\t\t\tstudent's num:"); /*交互输入*/
scanf("\t\t\t%s",stud[n+i].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n+i].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n+i].score);
gets(x); /*清除多余的输入*/
printf("\t\t\tany more records?(Y/N)");
scanf("\t\t\t%c",&sign); /*输入判断*/
i++;
}
return(n+i);
}
void Display(Student stud[],int n) /*显示所有记录*/
{
int i;
printf("\t\t\t-----------------------------------\n"); /*格式头*/
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(i=1;i<n+1;i++) /*循环输入*/
{
printf("\t\t\t%-16s%-15s%d\n",stud[i-1].num,stud[i-1].name,stud[i-1].score);
if(i>1&&i%10==0) /*每十个暂停*/
{printf("\t\t\t-----------------------------------\n"); /*格式*/
printf("\t\t\t");
system("pause");
printf("\t\t\t-----------------------------------\n");
}
}
printf("\t\t\t");
system("pause");
}
void Sort_by_num(Student stud[],int n) /*按学号排序*/
{ int i,j,*p,*q,s;
char t[10];
for(i=0;i<n-1;i++) /*冒泡法排序*/
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);
strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);
p=&stud[j+1].score;
q=&stud[j].score;
s=*p;
*p=*q;
*q=s;
}
}
int Insert_a_record(Student stud[],int n) /*插入一条记录*/
{char x[10]; /*清除多余输入所用*/
printf("\t\t\tstudent's num:"); /*交互式输入*/
scanf("\t\t\t%s",stud[n].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n].score);
gets(x);
n++;
Sort_by_num(stud,n); /*调用排序函数*/
printf("\t\t\tInsert Successed!\n"); /*返回成功信息*/
return(n);
}
int Delete_a_record(Student stud[],int n) /*按姓名查找，删除一条记录*/
{ char s[20];
int i=0,j;
printf("\t\t\ttell me his(her) name:"); /*交互式问寻*/
scanf("%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判断*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*返回失败信息*/
return(n);
}
for(j=i;j<n-1;j++) /*删除操作*/
{
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
stud[j].score=stud[j+1].score;
}
printf("\t\t\tDelete Successed!\n"); /*返回成功信息*/
return(n-1);
}
void Query_a_record(Student stud[],int n) /*查找并显示一个记录*/
{ char s[20];
int i=0;
printf("\t\t\tinput his(her) name:"); /*交互式输入*/
scanf("\t\t\t%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判断*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*输入失败信息*/
return;
}
printf("\t\t\this(her) number:%s\n",stud[i].num); /*输出该学生信息*/
printf("\t\t\this(her) score:%d\n",stud[i].score);
}
void Statistic(Student stud[],int n) /*新增功能，输出统计信息*/
{ int i,j=0,k=0,sum=0;
float aver; /*成绩平均值*/
for(i=0;i<n;i++) /*循环输入判断*/
{
sum+=stud[i].score;
if(stud[j].score>stud[i].score) j=i;
if(stud[k].score<stud[i].score) k=i;
}
aver=1.0*sum/n;
printf("\t\t\tthere are %d records.\n",n); /*总共记录数*/
printf("\t\t\tthe hignest score:\n"); /*最高分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[j].num,stud[j].name,stud[j].score);
printf("\t\t\tthe lowest score:\n"); /*最低分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[k].num,stud[k].name,stud[k].score);
printf("\t\t\tthe average score is %5.2f\n",aver); /*平均分*/
}
int AddfromText(Student stud[],int n) /*从文件中读入数据*/
{ int i=0,num;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename); /*输入文件名*/
if((fp=fopen(filename,"rb"))==NULL) /*打开文件*/
{ printf("\t\t\tcann't open the file\n"); /*打开失败信息*/
printf("\t\t\t");
system("pause");
return(n);
}
fscanf(fp,"%d",&num); /*读入总记录量*/
while(i<num) /*循环读入数据*/
{
fscanf(fp,"%s%s%d",stud[n+i].num,stud[n+i].name,&stud[n+i].score);
i++;
}
n+=num;
fclose(fp); /*关闭文件*/
printf("\t\t\tSuccessed!\n");
printf("\t\t\t");
system("pause");
return(n);
}
void WritetoText(Student stud[],int n) /*将所有记录写入文件*/
{
int i=0;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t\t\tWrite Records to a Text File\n"); /*输入文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename);
if((fp=fopen(filename,"w"))==NULL) /*打开文件*/
{
printf("\t\t\tcann't open the file\n");
system("pause");
return;
}
fprintf(fp,"%d\n",n); /*循环写入数据*/
while(i<n)
{
fprintf(fp,"%-16s%-15s%d\n",stud[i].num,stud[i].name,stud[i].score);
i++;
}
fclose(fp); /*关闭文件*/
printf("Successed!\n"); /*返回成功信息*/
}
void main() /*主函数*/
{
int n=0;
for(;;)
{
switch(menu_select()) /*选择判断*/
{
case 1:
printf("\t\t\tInput Records\n"); /*输入若干条记录*/
n=Input(stu,n);
break;
case 2:
printf("\t\t\tDisplay All Records\n"); /*显示所有记录*/
Display(stu,n);
break;
case 3:
printf("\t\t\tSort\n");
Sort_by_num(stu,n); /*按学号排序*/
printf("\t\t\tSort Suceessed!\n");
printf("\t\t\t");
system("pause");
break;
case 4:
printf("\t\t\tInsert a Record\n");
n=Insert_a_record(stu,n); /*插入一条记录*/
printf("\t\t\t");
system("pause");
break;
case 5:
printf("\t\t\tDelete a Record\n");
n=Delete_a_record(stu,n); /*按姓名查找，删除一条记录*/
printf("\t\t\t");
system("pause");
break;
case 6:
printf("\t\t\tQuery\n");
Query_a_record(stu,n); /*查找并显示一个记录*/
printf("\t\t\t");
system("pause");
break;
case 7:
printf("\t\t\tStatistic\n");
Statistic(stu,n); /*新增功能，输出统计信息*/
printf("\t\t\t");
system("pause");
break;
case 8:
printf("\t\t\tAdd Records from a Text File\n");
n=AddfromText(stu,n); /*新增功能，输出统计信息*/
break;
case 9:
printf("\t\t\tWrite to a Text file\n");
WritetoText(stu,n); /*循环写入数据*/
printf("\t\t\t");
system("pause");
break;
case 0:
printf("\t\t\tHave a Good Luck,Bye-bye!\n"); /*结束程序*/
printf("\t\t\t");
system("pause");
exit(0);
❺ c语言 学生成绩文件管理
按照你的要求，链表部分功能单独写。输入我没有写，直接传测试数据给函数的，你自己写scanf输入吧。所以函数我都详细备注了。
#include<stdio.h>
#include<malloc.h>
#include<string.h>
typedefstructstuInfo
{
intid;//学号
charname[10];//姓名
intscore[3];//分数
intave;//平均分
intcont;//信息总个数，只需在head中存储
structstuInfo*next;
}SIO;
SIO*findSIObyID(intid,SIO*sioHead);//通过ID查找，返回前一个节点
SIO*insertStu(intcount,intid,charname[],intscore[3],SIO*sioHead,SIO*sioTail);//插入学生信息。参数：count==-1时在链表末尾新增节点；count>=0时在指定学生位置，原学生后移
voidprintfSIO(SIO*sioHead);//打印链表
voiddeleteStu(intid,SIO*sioHead);//删除学生信息,并释放内存
voidpx(SIO*sioHead);//按照平均分数从高到低
voidfindMax(SIO*sioHead);//找到平均分最大学生信息
voidfindMin(SIO*sioHead);//找到平均分最小学生信息
intmain()
{
intscore[3];
SIO*sioTail=NULL,*sioHead=NULL;
sioHead=(SIO*)malloc(sizeof(SIO));
sioHead->next=NULL;
sioHead->cont=0;
printf("1、显示所有学生成绩：
");
score[0]=89;score[1]=91;score[2]=85;
sioTail=insertStu(3,111101,"陈明",score,sioHead,sioTail);
score[0]=99;score[1]=71;score[2]=83;
sioTail=insertStu(3,111102,"王大",score,sioHead,sioTail);
score[0]=79;score[1]=81;score[2]=85;
sioTail=insertStu(3,111103,"李四",score,sioHead,sioTail);
score[0]=92;score[1]=91;score[2]=75;
sioTail=insertStu(3,111104,"黄黄",score,sioHead,sioTail);
score[0]=81;score[1]=87;score[2]=95;
sioTail=insertStu(3,111105,"吴郎",score,sioHead,sioTail);
printfSIO(sioHead);
findMax(sioHead);
findMin(sioHead);
printf("
");
printf("2、删除学号111103的同学信息：
");
deleteStu(111103,sioHead);
printfSIO(sioHead);
printf("3、按照平均分数从高到低进行排序
");
px(sioHead);//排序
printfSIO(sioHead);
printf("4、在末尾插入新同学信息：111106,张宁
");
score[0]=77;score[1]=78;score[2]=89;
sioTail=insertStu(3,111106,"张宁",score,sioHead,sioTail);
printfSIO(sioHead);
printf("4、在中间插入同学信息：111107,张三
");
score[0]=91;score[1]=76;score[2]=95;
sioTail=insertStu(2,111107,"张三",score,sioHead,sioTail);
printfSIO(sioHead);
printf("4、在头部插入同学信息：111108,刘大
");
score[0]=86;score[1]=84;score[2]=85;
sioTail=insertStu(1,111108,"刘大",score,sioHead,sioTail);
printfSIO(sioHead);
return0;
}
voidprintfSIO(SIO*sioHead)//打印链表
{
printf("%-9s%-8s%-8s%-8s%-8s%s
","学号","姓名","成绩01","成绩02","成绩03","平均分");
while(sioHead->next!=NULL)
{
printf("%d%s%d%d%d%d
",sioHead->next->id,sioHead->next->name,sioHead->next->score[0],sioHead->next->score[1],sioHead->next->score[2],sioHead->next->ave);
sioHead=sioHead->next;
}
printf("
");
}
voidpx(SIO*sioHead)//按照平均分数从高到低
{
SIO*sioNext=NULL,*nextSave=NULL,sioSave;
while(sioHead->next!=NULL)
{
sioNext=sioHead->next;
while(sioNext->next!=NULL)
{
if(sioHead->next->ave<sioNext->next->ave)
{
nextSave=sioHead->next->next;
sioSave=*(sioHead->next);
*(sioHead->next)=*(sioNext->next);
sioHead->next->next=nextSave;
nextSave=sioNext->next->next;
*(sioNext->next)=sioSave;
sioNext->next->next=nextSave;
}
sioNext=sioNext->next;
}
sioHead=sioHead->next;
}
}
voidfindMax(SIO*sioHead)//找到平均分最大学生信息
{
intmax=0;
SIO*sioMax=NULL;
while(sioHead->next!=NULL)
{
if(max<sioHead->next->ave)
{
max=sioHead->next->ave;
sioMax=sioHead->next;
}
sioHead=sioHead->next;
}
printf("1、平均分最大的学生信息：
");
printf("%-9s%-8s%-8s%-8s%-8s%s
","学号","姓名","成绩01","成绩02","成绩03","平均分");
printf("%d%s%d%d%d%d
",sioMax->id,sioMax->name,sioMax->score[0],sioMax->score[1],sioMax->score[2],sioMax->ave);
}
voidfindMin(SIO*sioHead)//找到平均分最小学生信息
{
intmin=999;
SIO*sioMin=NULL;
while(sioHead->next!=NULL)
{
if(min>sioHead->next->ave)
{
min=sioHead->next->ave;
sioMin=sioHead->next;
}
sioHead=sioHead->next;
}
printf("1、平均分最小的学生信息：
");
printf("%-9s%-8s%-8s%-8s%-8s%s
","学号","姓名","成绩01","成绩02","成绩03","平均分");
printf("%d%s%d%d%d%d
",sioMin->id,sioMin->name,sioMin->score[0],sioMin->score[1],sioMin->score[2],sioMin->ave);
}
voiddeleteStu(intid,SIO*sioHead)//删除指定学号学生信息,并释放内存
{
SIO*dlsio=findSIObyID(id,sioHead);
SIO*dsio=dlsio->next;
dlsio->next=dlsio->next->next;
dsio->next=NULL;
free(dsio);
}
SIO*insertStu(intcount,intid,charname[],intscore[3],SIO*sioHead,SIO*sioTail)//插入学生信息。count==1时在首节点位置插入；count==2在中间位置插入，原学生后移;参数：count==3时在链表末尾新增节点；返回尾节点
{
intcon=0,mid=sioHead->cont/2;
SIO*sioNew=(SIO*)malloc(sizeof(SIO));
sioNew->next=NULL;
sioNew->id=id;
strcpy(sioNew->name,name);
sioNew->score[0]=score[0];
sioNew->score[1]=score[1];
sioNew->score[2]=score[2];
sioNew->ave=(score[0]+score[1]+score[2])/3;
if(count==3)
{
if(sioHead->next==NULL)
sioHead->next=sioNew;
else
sioTail->next=sioNew;
sioTail=sioNew;
sioHead->cont++;
returnsioTail;
}
if(count==2)//插入中间
{
if(sioHead->cont<2)//如果节点总数小于2，添加在尾部
{
sioHead->cont++;
returninsertStu(3,id,name,score,sioHead,sioTail);
}
while(sioHead->next!=NULL)
{
con++;
if(con==mid)
{
sioNew->next=sioHead->next->next;
sioHead->next=sioNew;
sioHead->cont++;
returnsioTail;
}
sioHead=sioHead->next;
}
}
if(count==1)//插入首节点
{
if(sioHead->next==NULL)
{
sioTail=sioHead->next=sioNew;
}
else
{
sioNew->next=sioHead->next->next;
sioHead->next=sioNew;
}
sioHead->cont++;
returnsioTail;
}
return0;
}
SIO*findSIObyID(intid,SIO*sioHead)//通过ID查找，返回前一个节点
{
while(sioHead->next!=NULL)
{
if(sioHead->next->id==id)
{
returnsioHead;
}
sioHead=sioHead->next;
}
returnNULL;
}
❻ 学生成绩管理系统c
数据库基础的课本上有例题啊
❼ 学生成绩文件管理 c语言
错误百出！这是改正语法错误的结果！还有一个错误，你的那个ave函数没有定义！自己加上吧！
#include <stdio.h>
#include <string.h>
struct student
{long num;
char name[10];
long score1;
long score2;
long score3;
}stu[10];
long max41(long a,long b,long c,int p[],int o);
long ave(long d,long e,long f);
void main()
{
int i,h[10],l,u;
long scoremax1[10],max0,max1,avery[10];
printf("输入学生信息\n");
printf("--------------------\n");
printf("学号 姓名 成绩\n");
for(i=0;i<2;i++)
scanf("%ld %s %ld %ld %ld",&stu[i].num,&stu[i].name[i],&stu[i].score1,&stu[i].score2,&stu[i].score3);
for(i=0;i<10;i++)
scoremax1[i]=max41(stu[i].score1,stu[i].score2,stu[i].score3,h,i);//第一问
max0=scoremax1[0];//第一问
for(i=1;i<10;i++)//第一问
{//第一问
if(max0<scoremax1[i])//第一问
{
max0=scoremax1[i];//第一问
l=i;
}
else l=0;//第一问
}
printf("该学生单科成绩最高————学号、姓名、以及该门课程的成绩");
printf("%ld %s %ld",stu[l].num,stu[l].name,scoremax1[l]);//第一问
for(i=0;i<10;i++)
avery[i]=ave(stu[i].score1,stu[i].score2,stu[i].score3);
max1=avery[0];
for(i=1;i<10;i++)
{
if(max1<avery[i])
{max1=scoremax1[i];
u=i;}
else u=0;
printf("三门课程的平均分数最高的学生的学号、姓名及其平均分");
printf("%ld %s %ld",stu[u].num,stu[u].name,avery[u]);
}
}
long max41(long a,long b,long c,int p[],int o)
{
int i,j;
long max;
if(a<b)
{max=b,j=2;}
else if(a<c)
{
max=c,j=3;
}
else j=1;
p[o]=j;
return max;
}
❽ 用C语言编程学生成绩文件管理
我可以给你思路 具体方法自己网络
用数据库存放成绩
C语言程序里面实现sql查询删除修改等操作
然后显示出来
如果不想黑窗口的话用MFC去搭建
❾ 学生成绩管理c语言程序
我以前写的，基本上括了你的所有要求
#include"stdio.h"
#include"stdlib.h"
#include"string.h"
#define N 3
typedef struct z1
{
char no[11];
char name[15];
int score[N];
float sum;
float average;
int order;
struct z1 *next;
}STUDENT;
STUDENT *init();
STUDENT *create();
STUDENT *del(STUDENT *h);
void print(STUDENT *h);
void search1(STUDENT *h);
void search2(STUDENT *h);
STUDENT *insert(STUDENT *h);
void sort(STUDENT *h);
void save(STUDENT *h);
void tongji(STUDENT *h);
int menu_select();
STUDENT *load();
void inputs(char *prompt,char *s,int count);
STUDENT *load();
main()
{
int i;
STUDENT *head;
head=init();
for(;;)
{
switch(menu_select())
{
case 0:head=init();break;
case 1:head=create();break;
case 2:head=insert(head);break;
case 3:save(head);break;
case 4:print(head);break;
case 5:search1(head);break;
case 6:head=del(head);break;
case 7:sort(head);break;
case 8:tongji(head);break;
case 9:search2(head);break;
case 10:exit(0);
}
}
}
int menu_select()
{
char *menu[]={"************菜单************",
"0. 初始化链表",
"1. 输入学生成绩",
"2. 插入学生成绩",
"3. 保存学生记录",
"4. 显示学生记录",
"5. 按学号查找学生信息",
"6. 删除指定学号的学生信息",
"7. 按某一门课对学生成绩排序",
"8. 统计某门课程的学生成绩",
"9. 按姓名查找学生信息",
"10. 退出系统"};
char s[3];
int c,i;
for(i=0;i<=11;i++)
printf(" %s\n",menu[i]);
do
{
printf("\n请选择0~10中的某一个选项\n");
scanf("%s",s);
c=atoi(s);
}while(c<0||c>10);
return c;
}
STUDENT *init()
{
return NULL;
}
STUDENT *create()
{
int i;int s;
STUDENT *h=NULL,*info;
for(;;)
{
info=(STUDENT *)malloc(sizeof(STUDENT));
if(!info)
{
printf("\n内存不足");
return NULL;
}
inputs("输入学号:",info->no,11);
if(info->no[0]=='@')break;
inputs("输入姓名:",info->name,15);
printf("开始输入%d门课的成绩\n",N);
s=0;
for(i=0;i<N;i++)
{
do{
printf("第%d门分数:",i+1);
scanf("%d",&info->score[i]);
if(info->score[i]>100||info->score[i]<0)
printf("输入成绩错误，请重新输入:\n");
}while(info->score[i]>100||info->score[i]<0);
s=s+info->score[i];
}
info->sum=s;
info->average=(float)s/N;
info->order=0;
info->next=h;
h=info;
}
return h;
}
void inputs(char *prompt,char *s,int count)
{
char p[255];
do
{
printf(prompt);
scanf("%s",p);
if(strlen(p)>count)
printf("\n太长了!\n");
}while(strlen(p)>count);
strcpy(s,p);
}
void print(STUDENT *h)
{
int i=0;
STUDENT *p;
p=h;
printf("\n\n\n***********************学生***********************\n");
printf("|序号|学号 | 姓名 | 语文 | 英语 |数学 | 总分 |平均分 |名次 |\n");
printf("|---|-------|--------|----|----|----|------|------|---|\n");
while(p!=NULL)
{
i++;
printf("|%3d |%-10s|%-8s|%4d|%4d|%4d|%4.2f|%4.2f|%3d|\n",i,p->no,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
p=p->next;
}
printf("***********************end***********************\n");
}
STUDENT *del(STUDENT *h)
{
STUDENT *p,*q;
char s[11];
printf("请输入要删除的学生的学号\n");
scanf("%s",s);
q=p=h;
while(strcmp(p->no,s)&&p!=NULL)
{
q=p;
p=p->next;
}
if(p==NULL)
printf("\n链表中没有学号为%s的学生\n",s);
else
{
printf("\n\n\n***********************找到了***********************\n");
printf("|学号 | 姓名 | 语文 | 英语 | 数学 | 总分 | 平均分 | 名次 |\n");
printf("|----------|----------|----|----|----|------|------|---|\n");
printf("|%-10s|%-8s|%4d|%4d|%4d|%4.2f|%4.2f|%3d|\n",p->no,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("***********************end***********************\n");
printf("请按任意键删除\n");
getchar();
if(p==h)
h=p->next;
else q->next=p->next;
free(p);
printf("\n已经删除学号为%s的学生\n",s);
printf("不要忘了保存数据\n");
}
return h;
}
void search1(STUDENT *h)
{
STUDENT *p;
char s[11];
printf("请输入你要查找的同学的学号\n");
scanf("%s",s);
p=h;
while(strcmp(p->no,s)&&p!=NULL)
p=p->next;
if(p==NULL)
printf("'n没有学号为%s的学生\n",s);
else
{
printf("\n\n\n***********************找到了***********************\n");
printf("|学号 | 姓名 | 语文 | 英语 | 数学 | 总分 | 平均分 | 名次 |\n");
printf("|----------|-----------|----|----|----|------|------|---|\n");
printf("|%-10s|%-8s|%4d|%4d|%4d|%4.2f|%4.2f|%3d|\n",p->no,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("***********************end***********************\n");
}
}
void search2(STUDENT *h)
{
STUDENT *p;
char s[11];
printf("请输入你要查找的同学的姓名\n");
scanf("%s",s);
p=h;
while(strcmp(p->name,s)&&p!=NULL)
p=p->next;
if(p==NULL)
printf("\n没有姓名为%s的学生\n",s);
else
{
printf("\n\n\n***********************找到了***********************\n");
printf("|学号 | 姓名 | 语文 | 英语 | 数学 | 总分 | 平均分 | 名次 |\n");
printf("|----------|-----------|----|----|----|------|------|---|\n");
printf("|%-10s|%-8s|%4d|%4d|%4d|%4.2f|%4.2f|%3d|\n",p->no,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("***********************end***********************\n");
}
}
STUDENT *insert(STUDENT *h)
{
STUDENT *p,*q,*info;
char s[11];
int s1,i;
printf("请输入插入点的学生学号\n");
scanf("%s",s);
printf("\n请输入新的学生信息\n");
info=(STUDENT *)malloc(sizeof(STUDENT));
if(!info)
{
printf("\n内存不足!");
return NULL;
}
inputs("输入学号:",info->no,11);
inputs("输入姓名:",info->name,15);
printf("请输入%d门课的分数\n",N);
s1=0;
for(i=0;i<N;i++)
{
do{
printf("分数%d",i+1);
scanf("%d",&info->score[i]);
if(info->score[i]>100||info->score[i]<0)
printf("输入数据有误，请重新输入\n");
}while(info->score[i]>100||info->score[i]<0);
s1=s1+info->score[i];
}
info->sum=s1;
info->average=(float)s1/N;
info->order=0;
info->next=NULL;
p=h;
q=h;
while(strcmp(p->no,s)&&p!=NULL)
{q=p;p=p->next;}
if(p==NULL)
if(p==h)
h=info;
else q->next=info;
else
if(p==h)
{
info->next=p;
h=info;
}
else
{
info->next=p;
q->next=info;
}
printf("\n已经插入了%s这个学生\n",info->name);
printf("----不要忘了存盘啊--\n");
return(h);
}
void save(STUDENT *h)
{
FILE *fp;
STUDENT *p;
char outfile[10];
printf("请输入保存文件的文件名，例如 c:\\f1\\te.txt:\n");
scanf("%s",outfile);
if((fp=fopen(outfile,"wb"))==NULL)
{
printf("不能打开文件\n");
exit(1);
}
printf("\n正在保存......\n");
p=h;
while(p!=NULL)
{
fwrite(p,sizeof(STUDENT),1,fp);
p=p->next;
}
fclose(fp);
printf("------保存成功!!!------\n");
}
STUDENT *load()
{
STUDENT *p,*q,*h=NULL;
FILE *fp;
char infile[10];
printf("请输入要读取数据的文件名,例如c:\\f1\\te.txt:\n");
scanf("%s",infile);
if((fp=fopen(infile,"wb"))==NULL)
{
printf("不能打开文件\n");
exit(1);
}
printf("正在读取数据....\n");
p=(STUDENT *)malloc(sizeof(STUDENT));
if(!p)
{
printf("内存不足!\n");
exit(1);
}
h=p;
while(!feof(fp))
{
if(1!=fread(p,sizeof(STUDENT),1,fp))
break;
p->next=(STUDENT *)malloc(sizeof(STUDENT));
if(!p->next)
{
printf("内存不足!\n");
return h;
}
q=p;
p=p->next;
}
q->next=NULL;
fclose(fp);
printf("---你已经成功地从文件中读取了数据!!!---\n");
return h;
}
void sort(STUDENT *h)
{
int i=0,j;
STUDENT *p,*q,*t,*h1;
printf("请输入要按哪门课程的编号来排序:(0.语文 1.数学 2.英语)\n");
scanf("%d",&j);
h1=h->next;
h->next=NULL;
while(h1!=NULL)
{
t=h1;
h1=h1->next;
p=h;
q=h;
while(t->score[j]<p->score[j]&&p!=NULL)
{
q=p;
p=p->next;
}
if(p==q)
{
t->next=p;
h=t;
}
else
{
t->next=p;
q->next=t;
}
}
p=h;
while(p!=NULL)
{
i++;
p->order=i;
p=p->next;
}
print(h);
printf("排序成功!!!\n");
}
void tongji(STUDENT *h)
{
STUDENT *p;
int a,b,i;
printf("请输入课程编号\n");
scanf("%d",&i);
printf("请输入分数段:\n");
scanf("%d,%d",&a,&b);
p=h;
while(p!=NULL)
{
printf("\n\n\n***********************找到了***********************\n");
if(p->score[i]>=a&&p->score[i]<=b)
{
printf("|学号 | 姓名 | 语文 | 英语 | 数学 | 总分 | 平均分 | 名次 |\n");
printf("|--------|---------|----|----|----|------|------|---|\n");
printf("|%-10s|%-8s|%4d|%4d|%4d|%4.2f|%4.2f|%3d|\n",p->no,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
}
p=p->next;
}
printf("***********************end***********************\n");
}