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Lukebing123 7 years ago
commit 581a86fe3c
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keshe.cpp
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#include<stdio.h>
#include<string.h>
#include<stdlib.h>
struct student_info
{
int id;
char name[20];
float cscore;
};
struct student students[50];
int count=0;
printf("****************???????***************");
printf("* *");
printf("** 1.???? **");
printf("** 2.???? **");
printf("** 3.???? **");
printf("** 4.???????? **");
printf("** 5.?????,??? **");
printf("** 6.????????? **");
printf("****************~~~~~~~~~~~~~~***************");
int main()
{
int n;
system("cls")
char name[20];
int i=0;
FILE *fp;
if((fp=fopen("a.txt","w+"))==NULL)
{
printf("can not open the file!");
exit(0);
}
for(i=0;i<50;i++)
{
fprintf(fp,"%d %s %d",students[i].id,students[i].name,students[i].cscore);
}
do
{
printf("?????????:1.?? 2.?? 3.?? 4.????????\n5.?????,??? 6.????????? 7.??\n");
scanf("%d",&n);
switch(n)
{
case 1:
printf("???????????");
scanf("%s",students[i].name)
search_student(students,name);
break;
case 2:
printf("??0???????????????\n");
do
{
printf("???????????:");
scanf("%d",&students[i],id);
printf("???????????:");
scanf("%s",students[i].name);
printf("???????????");
scanf("%f",&students[i].csore);
if(students[i].id!=0)
fprintf(fp,"%d %s %s",students[i].id,students[i].name,students[i].cscore);
}while(students[i].id!=0);
fclose(fp);
break;
case 3:
printf("???????????:");
scanf("%d",&students[i].id);
printf("???????????:");
scanf("%s",students[i].name);
printf("???????????:");
scanf("%d",&students[i].cscore);
modify_student(students,id,name,cscore);
break;
case 4:
system("cls");
int i,j
if((fp=fopen("a.txt","w+"))==NULL)
{
printf("can not open the file!");
exit(0);
}
while(fscanf(fp,"%d %s %d",&students[i].id,&students[i].name,&students[i].cscore)!=EOF)
{
i++;
}
fclose(fp);
printf("90????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=90)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("80????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=80&&students[j].cscore<90)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("70????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=70&&students[j].cscore<80)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("60????:")
for(j=0;j<i;j++)
{
if(students[j].cscore>=60&&students[j].cscore<70)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("50????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=50&&students[j].cscore<60)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("40????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=40&&students[j].cscore<50)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("30????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=30&&students[j].cscore<40)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("20????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=20&&students[j].cscore<30)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("10????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=10&&students[j].cscore<20)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
printf("0????:");
for(j=0;j<i;j++)
{
if(students[j].cscore>=0&&students[j].cscore<10)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
printf("\n");
}
for(j=0;j<i;j++)
if(students[j].cscore<0)
break;
case 5:
system("cls");
if((fp=fopen("a.txt","w+"))==NULL)
{
printf("can not open the file!");
exit(0);
}
while(fscanf(fp,"%d %s %d",&students[i].id,&students[i].name,&students[i].cscore)!=EOF)
{
i++;
}
fclose(fp);
int max,min,j;
for(j=0;j<i;j++)
{
if(students[j].cscore<students)
}
case 6:
system("cls");
if((fp=fopen("a.txt","w+"))==NULL)
{
printf("can not open the file!");
exit(0);
}
while(fscanf(fp,"%d %s %d",&students[i].id,&students[i].name,&students[i].cscore)!=EOF)
{
i++;
}
fclose(fp);
strcut student temp;
for(j=0;j<i-1;j++)
{
for(u=0;u<i-1-j;u++)
if(students[u].cscore<students[u+1].cscore)
temp=students[u];
students[u]=students[u+1];
students[u+1]=temp;
}
for(j=0;j<i;j++)
printf("%d %s %d",students[j].id,students[j].name,students[j].cscore);
break;
int serach_student(struct student_info students[],char *name)
{
system("cls");
if((fp=fopen("a.txt","w+"))==NULL)
{
printf("can not open the file!");
exit(0);
}
while(fscanf(fp,"%d %s %d",&students[i].id,&students[i].name,&students[i].cscore)!=EOF)
{
i++;
}
fclose(fp);
int i,flag=0;
if(i==0)
{
printf("??????!\n");
return -1;
}
for(j=0;j<i;j++)
{
if(strcmp(name,students[j].name)==0)
flag=1;
if(flag)
{
printf("??: %s ??:%s c????:%f",students[j].id,students[j].name,students[j].cscore);
return j;
}
}
printf("????????!");
return -1;
}
int modify_student(struct student_info students[],int idcard,char *names,int cscores)
{
system("cls");
int n,i,j;
if((fp=fopen("a.txt","w+"))==NULL)
{
printf("can not open the file!");
exit(0);
}
while(fscanf(fp,"%d %s %d",&students[i].id,&students[i].name,&students[i].cscore)!=EOF)
{
i++;
}
printf("1.??????????? 2.??????????? ???:\n");
scanf("%d",&n);
if(n==1)
{
for(j=0;j<i;j++)
{
if(strcmp(names,students[j].name)==0)
students[j].cscore=cscores;
}
}
if(n==2)
{
for(j=0;j<i;j++)
{
if(idcard==students[j].id)
students[j].cscore=cscores;
}
}
fp=fopen("a.txt","w");
for(j=0;j<i;j++)
{
fprintf(fp,"%d %s %d",students[j].id,students[j].name,students[j].cscore);
}
fclose(fp);
}
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