一个我想不明白的简单问题?

Question

程序如下:
 当运行时我输3个数进去,但输出的却不对,不知是怎么回事?
  #include"iostream.h"
   void main()
   {float a,b,c;
   cout<<"Please input 3 sides of one triangle:"<<endl;
   cin>>a;
   cin>>b;
   cin>>b;
   cout<<"a="<<a<<endl;
   cout<<"b="<<b<<endl;
   cout<<"c="<<c<<endl;
    }

Answer 1

cin>>a;
   cin>>b;
   cin>>b;//cin>>c;

Answer 2

#include"iostream.h"
   void main()
   {float a,b,c;
   cout<<"Please input 3 sides of one triangle:"<<endl;
   cin>>a;
   cin>>b;
   cin>>b;//input b again?
   cout<<"a="<<a<<endl;
   cout<<"b="<<b<<endl;
   cout<<"c="<<c<<endl;
    }

Answer 3

use printf special .xxx

Answer 4

#include"iostream.h"
void main()
{
    float a,b,c;
    cout<<"Please input 3 sides of one triangle:"<<endl;
    cin>>a;
    cin>>b;
// !   
    cin>>c; // cin>>b;
// !
    cout<<"a="<<a<<endl;
    cout<<"b="<<b<<endl;
    cout<<"c="<<c<<endl;
}

Answer 5

老兄，稍微信心一点好不好？
有时候不是什么问题都要来csdn的

Answer 6

第二个cin>>b应改写为cin>>c

Answer 7

beijingshizi(菜青虫) 说得对