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#include <stdio.h>
#include <string.h>
#define MAX_ACCOUNTS 32
#define MAX_NAME_LEN 32
#define MAX_PWD_LEN 32
#define REGIST 1
#define LOGIN 2
#define MODIFY 3
#define DELETE 4
typedefstructaccount
{
intflag;
charname[MAX_NAME_LEN];
charpassword[MAX_PWD_LEN];
}ACCOUNT_T;
ACCOUNT_T g_user[MAX_ACCOUNTS] = {0};
voidinput(ACCOUNT_T *input)
{
printf("请输入不超过%d位的用户名
", MAX_NAME_LEN-1);
scanf("%s", input->name);
printf("请输入不超过%d位的密码
", MAX_NAME_LEN-1);
scanf("%s", input->password);
}
ACCOUNT_T *find()
{
inti = 0;
ACCOUNT_T tmp = {0};
input(&tmp);
for(i = 0; i < MAX_ACCOUNTS; i++)
{
if(1 == g_user[i].flag
&& 0 == strcmp(g_user[i].name, tmp.name)
&& 0 == strcmp(g_user[i].password, tmp.password))
{
return&g_user[i];
}
}
returnNULL;
}
ACCOUNT_T *new()
{
inti = 0;
ACCOUNT_T *p = NULL;
for(i = 0; i < MAX_ACCOUNTS; i++)
{
if(0 == g_user[i].flag)
{
p = &g_user[i];
break;
}
}
if(p)
{
input(p);
p->flag = 1;
printf("注册成功
");
}
else
{
printf("注册失败 最多%d个用户
", MAX_ACCOUNTS);
}
returnp;
}
ACCOUNT_T *modify()
{
ACCOUNT_T *p = NULL;
p = find();
if(p)
{
printf("请输入新的不超过%d位的密码
", MAX_NAME_LEN-1);
scanf("%s", p->password);
}
else
{
printf("找不到该用户
");
}
returnp;
}
voiddel()
{
ACCOUNT_T *p = NULL;
p = find();
if(p)
{
memset(p, 0, sizeof(ACCOUNT_T));
printf("删除完毕
");
}
else
{
printf("找不到该用户
");
}
return;
}
ACCOUNT_T *login()
{
ACCOUNT_T *p = NULL;
p = find();
if(p)
{
printf("允许登入
");
}
else
{
printf("不允许登入
");
}
returnp;
}
intmain(intargc, char*argv[])
{
intaction = 0;
while(1)
{
printf("请输入操作码: %d.注册 %d.登入 %d.修改密码 %d注销
"
, REGIST, LOGIN, MODIFY, DELETE);
scanf("%d", &action);
switch(action)
{
caseREGIST:
new();
break;
caseLOGIN:
login();
break;
caseMODIFY:
modify();
break;
caseDELETE:
del();
break;
default:
printf("不支持的操作%d
", action);
break;
}
}
return0;
}
题外话,你真抠,这么多就5分,要不是我太闲了,不会有人帮你写的。