C语言程序设计——教室管理系统(源代码))

C语言程序设计——教室管理系统（源代码）
非常有用的。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define szSTR 64
#define fileDB "c:\\contact.txt"
struct CONTACT {
char num[szSTR];/*教室编号*/
char site[szSTR];/*教室位置*/
char snum[szSTR];/*座位数*/
char tv[szSTR];/*有无多媒体*/
char use[szSTR];/*是否可用*/
};
typedef struct CONTACT CON;
#define ANUM 1
#define ASITE 2
#define ASNUM 3
#define ATV 4
#define AUSE 5
#define BFULL 0xFF
int OPER[6] = {BFULL, ANUM, ASITE, ASNUM, ATV,AUSE};
void input(CON * s, int mask)
{
if(mask & ANUM) { printf("请输入教室编号："); scanf("%s", s->num); }
if(mask & ASITE) { printf("请输入教室位置："); scanf("%s", s->site); }
if(mask & ASNUM) { printf("请输入座位数："); scanf("%s", s->snum); }
if(mask & ATV){printf("请输入是否有多媒体(有/Y*无/N):");scanf("%s",s->tv);}
if(mask & AUSE) { printf("请输入是否可用(可/Y*否/N)："); scanf("%s", s->use); } }/*end input*/
void show (int id, CON * s)
{
if(!s) return ;
if(id)
printf("%d\t%s\t\t%s\t%s\t\t%s\t\t%s\n",
id, s->num , s->site , s->snum , s->tv,s->use );
else
printf("【编号】%s【教室编号】%s【位置】%s【座位数】%s【有无多媒体】%s【是否可用】%s\n",
s->num , s->site , s->snum , s->tv,s->use );
/*end if*/
}/*end show*/
void regist(void)
{
CON s; FILE * f = 0;
input(&s, BFULL);
f = fopen(fileDB, "ab");
fwrite(&s,sizeof(s),1,f);
fclose(f);
printf("资料已保存！\n\n\n\n");
}/*end regist*/
int browse(char * key, fpos_t * p, CON * s)
{
FILE * f =0; int i = 0, r = 0; CON t;
char * a = 0, * b = 0; fpos_t q;
if(!s) return 0;
f = fopen(fileDB, "rb");
if(!f) {
printf("数据库暂无记录\n\n\n\n");
return 0;
}/*end if*/
printf("编号\t教室编号\t位置\t座位数\t有无多媒体(Y/N)\t是否可用(Y/N)\n");
printf("----------------------------------------------------------------------\n");
while(!feof(f)) {
fgetpos(f, &q);
r = fread(&t, sizeof(t), 1, f);
if(r<1)break;
if(t.num[0]==0) continue;
if(key) {
a = strstr(t.num , key);
b = strstr(t.site , key);
if(a == 0 && b == 0) continue;
}/*end if*/
if(p) *p = q;
if(s) memcpy(s, &t, sizeof(t));
i++;
show(i, &t);
}/*end while*/
printf("----------------------------------------------------------------------\n\n\n\n\n");
return i;
}/*end browse*/
fpos_t query(CON * s)
{
char key[szSTR]=""; fpos_t p = 0; int r = 0;
printf("请输入教室编号或者位置：");
scanf("%s", key);
r = browse(key, &p, s);
return r?p:-1;
}/*end query*/
void clear(void)
{
FILE * f = 0; CON s;
fpos_t p = query(&s);
if(p<0) return;
f = fopen(fileDB, "rb+");
fsetpos(f, &p);
memset(&s, 0, sizeof(s));
fwrite(&s, sizeof(s),1, f);
fclose(f);
printf("记录已删除！\n\n\n\n\n");
}/*end clear*/
void modify(void)
{
FILE * f = 0; CON s; int cmd = 0;
fpos_t p = query(&s);
if(p<0) return;
f = fopen(fileDB, "rb+");
fsetpos(f, &p);
for(;;) {
show(0, &s);
printf("请选择：1-编号；2-位置；3-座位数；4-有无多媒体；5-是否可用；6-保存并退出；7-放弃修改并退出\n\n\n\n");
scanf("%d", &cmd);
switch(cmd) {
case 1:
case 2:
case 3:
case 4:
input(&s, OPER[cmd]);
break;
case 6:
fsetpos(f, &p);
fwrite(&s, sizeof(s), 1, f);
case 7:
fclose(f);
return;
default:
printf("错误的操作，请重新输入。

\n\n\n\n\n");
}/*end case*/
}/*mext*/
}/*end clear*/
int main(void)
{
char cmd = 0; CON s;
for(;;) {
printf(" 欢迎使用教室信息管理系统!\n请选择：\n1-添加；\n2-查询；\n3-删除；\n4-修改；\n5-全部输出；\n0-退出\n\n\n\n");
scanf("%d", &cmd);
switch(cmd) {
case 0: return 0;
case 1: regist(); break;
case 2: query(&s); break;
case 3: clear(); break;
case 4: modify(); break;
case 5: browse(0, 0, &s); break;
}//end case
}
return 0;
}。