#include "stdio.h"
static void Main(string[]args)
{
    int id,pwd;
    do
    {
        printf("请输入您的名字代号:");
        printf("(1)小王,(2)小梁,(3)小赵");
        scanf("%d",&id);
        printf("请输入密码:");
        scanf("%d",&pwd);
        switch(id)
        {
            case 1:
                 if(pwd=="xiaowang")
                 {
                     printf("密码正确!");
                    flag=true;
                 }
                 else
                 {
                     printf("密码错误!");
                 }
                 if(pwd=="xiaoliang");
                 {
                     printf("密码正确!");
                     flag=true;
                 }
                 else
                 {
                     printf("密码错误!");
                 }
                 if(pwd=="xiaozhao");
                 {
                     printf("密码正确!");
                     flag=true;
                 }
                 else
                 {
                     printf("密码错误!");
                 }
                 break;
             default:
                  printf("查无此人");break;
            
        }
        
    }while(!flag);   
    printf("谢谢使用,请按回车键退出!");
   
}


这本来是C#里的代码,我把他改了一下,但是运行不了....请问什么原因