c语言课程设计_学生成绩管理系统6

来源：不详责任编辑：栏目编辑发表时间:2013-07-02 06:41　点击:次

学生成绩管理系统代码

#include "stdio.h" /*I/O函数*/
#include "stdlib.h" /*其它说明*/
#include "string.h" /*字符串函数*/
#include "conio.h" /*屏幕操作函数*/
#include "mem.h" /*内存操作函数*/
#include "ctype.h" /*字符操作函数*/
#include "alloc.h" /*动态地址分配函数*/
struct score
{
int mingci;
char xuehao[8];
char mingzi[20];
float score[6];
}data,info[1000];
int i,j,k=0;
char temp[20],ch;
FILE *fp,*fp1;

void shuru()
{
if((fp=fopen("s_score.txt","ab+"))==NULL)
{
  printf("cannot open this file.\n");
  getch();exit(0);
}
for(i=0;i<=1000;i++)
{
printf("\nPlease shuru xuehao:");
gets(data.xuehao);
printf("Please shuru mingzi:");
gets(data.mingzi);
printf("Please shuru yuwen score:");
gets(temp);data.score[0]=atof(temp);
printf("Please shuru shuxue score:");
gets(temp);data.score[1]=atof(temp);
printf("Please input yingyu score:");
gets(temp);data.score[2]=atof(temp);
printf("Please shuru wuli score:");
gets(temp);data.score[3]=atof(temp);
printf("Please shur huaxue score:");
gets(temp);data.score[4]=atof(temp);
data.score[5]=data.score[0]+data.score[1]+data.score[2]+data.score[3]+data.score[4];
fwrite(&data,sizeof(data),1,fp);
printf("another?y/n");
ch=getch();
if(ch=='n'||ch=='N')
break;
} fclose(fp);
}
void xianshi()
{
float s;int n;
if((fp=fopen("s_score.txt","rb+"))==NULL)
{
   printf("Cannot reading this file.\n");
   exit(0);
}
for(i=0;i<=1000;i++)
{
   if((fread(&info[i],sizeof(info[i]),1,fp))!=1)
   break;
}
printf("\nxuehao  mingzi yuwen  shuxue yingyu  wuli  huauxue zhongfen\n");
for(j=0,k=1;j<i;j++,k++)
{
   info[j].mingci=k;
   printf("%6s %8s %3.1f %3.1f %3.1f %3.1f %3.1f %3.1f\n",info[j].xuehao,info[j].mingzi,info[j].score[0],info[j].score[1],info[j].score[2],info[j].score[3],info[j].score[4],
   info[j].score[5]);
}
getch();
fclose(fp);
}

void xiugai()
{
if((fp=fopen("s_score.txt","rb+"))==NULL||(fp1=fopen("temp.txt","wb+"))==NULL)
{
   printf("Cannot open this file.\n");
   exit(0);
}
printf("\nPLease shuru xiugai xuehao:");
scanf("%d",&i); getchar();
while((fread(&data,sizeof(data),1,fp))==1)
{
j=atoi(data.xuehao);
      if(j==i)
      {
      printf("xuehao:%s\nmingzi:%s\n",data.xuehao,data.mingzi);
         printf("Please shuru mingzi:");
         gets(data.mingzi);
         printf("Please shuru yuwen score:");
         gets(temp);data.score[0]=atof(temp);
&n

c语言课程设计_学生成绩管理系统6

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