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

  main()
  {
        char username;
        char userpass;
        int count=0;
        int issuccess=0;
        char initname[]={"admin"};
        char initpass[]={"1234"};
        for (;count<3;count++)
        {
         gets(username);
         gets(userpass);
         if(strcmp(username,initname)==0 && strcmp(userpass,initpass)==0)
         {
          issuccess=1;
          break;
        if(issuccess==1)
        printf("dengluchenggong");
        else
        printf("denglushibai");
        }
        }
        getch();

  }

1、  char username[10] = {0};
     char userpass[10] = {0};
     这两句是什么意思啊？？？
 2、为什么for循环语句里面的变量总要先附一个值（有的等于0或1）？
比如：main()
     {
       int num=1;
       int sum=0;
       for(num=1;num<=10;num++)
       ......
      }