#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);            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 input wuli score:");            gets(temp);data.score[3]=atof(temp);            printf("Please input 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,fp1);    }    fseek(fp,0L,0);    fseek(fp1,0L,0);    while((fread(&data,sizeof(data),1,fp1))==1)    {      fwrite(&data,sizeof(data),1,fp);    }   fclose(fp);   fclose(fp1);}void chazhao(){    if((fp=fopen("s_score.txt","rb"))==NULL)    {    printf("\nCannot open this file.\n");        exit(0);    }    printf("\nPLease shuru xuehao chakan:");    scanf("%d",&i);    while(fread(&data,sizeof(data),1,fp)==1)    {        j=atoi(data.xuehao);        if(i==j)        {         printf("xuehao:%s   mingzi:%s\nyuwen:%f\n shuxue:%f\n yingyu:%f\n wuli:%f\n huaxue:%f\n ",data.xuehao,data.mingzi,data.score[0],data.score[1],data.score[2],data.score[3],data.score[4],data.score[5]);        }getch();    }}void shanchu(){if((fp=fopen("s_score.txt","rb+"))==NULL||(fp1=fopen("temp.txt","wb+"))==NULL)    {     printf("\nopen score.txt was failed!");     getch();     exit(0);    }    printf("\nPlease input ID which you want to del:");    scanf("%d",&i);getchar();    while((fread(&data,sizeof(data),1,fp))==1)    {        j=atoi(data.xuehao);        if(j==i)        {            printf("Anykey will delet it.\n");            getch();            continue;        }        fwrite(&data,sizeof(data),1,fp1);    }   fclose(fp);   fclose(fp1);   remove("s_score.txt");   rename("temp.txt","s_score.txt");   printf("Data delet was succesful!\n");   printf("Anykey will return to main.");   getch();}main(){while(1){  clrscr();                     /*清屏幕*/   gotoxy(1,1);             /*移动光标*/   textcolor(YELLOW);   /*设置文本显示颜色为黄色*/   textbackground(BLUE);   /*设置背景颜色为蓝色*/   window(1,1,99,99);       /* 制作显示菜单的窗口，大小根据菜单条数设计*/    clrscr();  printf("*************welcome to use student manage******************\n");  printf("*************************menu********************************\n");  printf("* ========================================================= *   \n");  printf("*               1>shuru        2>xiugai                     *   \n");  printf("*               3>shanchu      4>chazhao                    *   \n");  printf("*               5>xianshi      6>exit                       *   \n");  printf("*                                                           *   \n");  printf("* --------------------------------------------------------- *  \n");    printf("     Please input which you want(1-6):");    ch=getch();    switch(ch)    {    case '1':shuru();break;    case '2':xiugai(); break;    case '3':shanchu();  break;    case '4':chazhao(); break;    case '5':xianshi();   break;    case '6':exit(0);    default: continue;    }}}

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