新建 文本文档.txt

QQ好友管理系统!能够很快的增加删除你的好友.方便了你的QQ功能.

#include "stdio.h" 
#include "conio.h" 

struct qq 
{ 
char num[12]; 
char name[10]; 
char age[2]; 
}Qq[1]; 
main() 
{ 
int kk=1;char choice; 
loop2 : init(); 
loop : scanf("%c",&choice); 
switch(choice) 
{ 
case 'n': case 'N': newf();break; 
case 'a': case 'A': break; 
case 'l': case 'L': system("cls");listf();getch();system("cls");goto loop2; 
case 'f': case 'F': findf();getch();goto loop2; 
case 'd': case 'D': deletef();getch();goto loop2; 
case 'q': case 'Q': return 0; 
default: goto loop; 
} 
 while(kk==1) 
{ 
addf(); 
printf("enter 1 to continue add.\n"); 
scanf("%d",&kk); 
system("cls"); 
} 
goto loop2; 
} 


int init() 
{ 
printf("\n**************************************\n"); 
printf("******第一次用本程序请按n(new)********\n"); 
printf("*********增加记录请按a(add)***********\n"); 
printf("*******查看记录情况请按l(list)********\n"); 
printf("*****查询某个记录情况请按f(find)******\n"); 
printf("********删除记录请按d(delete)*********\n"); 
printf("***********退出请按q(quit)************\n"); 
printf("**************************************\n"); 
} 
int newf() 
{ 
FILE *fp,*Fp; int n; 
Fp=fopen("QQ","w"); 
fclose(Fp); 
fp=fopen("num","w"); 
n=0; 
fprintf(fp,"%d",n); 
fclose(fp); 
} 
int addf() 
{ 
FILE *fp1,*fp;int n; 
printf("**************************************\n"); 
printf("******请依次输入QQ号,姓名,年龄.*******\n"); 
printf("**************************************\n"); 
fp1=fopen("QQ","a"); 
scanf("%s%s%s",&Qq[0].num,&Qq[0].name,&Qq[0].age); 
fwrite(&Qq[0],sizeof(struct qq),1,fp1); 
fclose(fp1); 
fp=fopen("num","r"); 
fscanf(fp,"%d",&n); 
fclose(fp); 
fp=fopen("num","w"); 
n++; 
fprintf(fp,"%d",n); 
fclose(fp); 
} 
int listf() 
{ 
FILE *fp;int n,i,k=0; 
fp=fopen("num","r"); 
fscanf(fp,"%d",&n); 
fclose(fp); 
fp=fopen("QQ","r"); 
for (i=0;i<n;i++) 
{ 
fread(&Qq[0],sizeof(struct qq),1,fp); 
printf("QQ:%s\nname:%s\nage:%s\n\n\n",&Qq[0].num,&Qq[0].name,&Qq[0].age); 
k++; 
if (k%4==0) {printf("\nput any key continue\n"); getch();system("cls");k=0;}  
} 
fclose(fp); 
} 

int findf() 
{ 
char namef[10];int n,i; 

FILE *fp; 
printf("\n*******请输入姓名********\n"); 
scanf("%s",&namef); 
fp=fopen("num","r"); 
fscanf(fp,"%d",&n); 
struct qq q[n]; 
fclose(fp); 
fp=fopen("QQ","r"); 
for (i=0;i<n;i++) 
{ 
fread(&q[i],sizeof(struct qq),1,fp); 
if (strcmp(q[i].name,namef)==0) 
{ 
printf("QQ:%s\nname:%s\nage:%s\n\n\n",q[i].num,q[i].name,q[i].age); 
fclose(fp); return 0; 
} 
} 
printf("sorry, the name can't be found.\n"); 
printf("put any key continue.\n"); 
fclose(fp); 
} 

int deletef() 
{ 
char namef[10];int n,i,kk=-1; 

FILE *fp; 
printf("\n*******请输入要删除QQ人的姓名********\n"); 
scanf("%s",&namef); 
fp=fopen("num","r"); 
fscanf(fp,"%d",&n); 
struct qq q[n]; 
fclose(fp); 
fp=fopen("QQ","r"); 
for (i=0;i<n;i++) 
{ 
fread(&q[i],sizeof(struct qq),1,fp); 
if (strcmp(q[i].name,namef)==0)  kk=i; 
} 
fclose(fp); 
if (kk==-1) 
{ 
printf("sorry, the name can't be found.\n"); 
printf("put any key continue.\n"); 
return 0; 
} 
else 
fp=fopen("QQ","w"); 
for (i=0;i<kk;i++) 
fwrite(&q[i],sizeof(struct qq),1,fp); 
for (i=kk+1;i<n;i++) 
fwrite(&q[i],sizeof(struct qq),1,fp); 
fclose(fp); 
n=n-1; 
fp=fopen("num","w"); 
fprintf(fp,"%d",n); 
fclose(fp); 
}