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【源代码如下】

#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

{

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();

gotoxy(1,1);

textcolor(YELLOW);

textbackground(BLUE);

window(1,1,99,99);

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;

}

}