2_2.cpp

c++书籍的源代码

#include<iostream.h>
 int main()
{
 const int p=123;
 int m;
 cout<<"请输入密码："<<endl;
 cin>>m;
 if(m==p)
  cout<<"恭喜您，登陆成功！"<<endl;
 else
  cout<<"对不起，登陆失败！"<<endl;
 return(0);
}