d24.cpp

计算24点的C++源码

#include <iostream>

using namespace std;

int main()
{
	int a,b,c,d;
	
	cout<<" a= ";
	cin>>a;
	cout<<" b= ";
	cin>>b;
	cout<<" c= ";
	cin>>c;
	cout<<" d= ";
	cin>>d;
	
    cout<<a<<"+"<<b<<"+"<<c<<"+"<<d<<"="<<a+b+c+d<<endl;  
    
    int i,t;
    for(i=1;i<=4;i++)
    {
    	cout<<a<<"+"<<b<<"+"<<c<<"-"<<d<<"="<<a+b+c-d<<endl;
    	t=a;a=b;b=c;c=d;d=t;
    }
    
    for(i=1;i<=6;i++)
    {
    	cout<<a<<"+"<<b<<"-"<<c<<"-"<<d<<"="<<a+b-c-d<<endl;
    	t=a;a=b;b=c;c=d;d=t;
    }
    
	for(i=1;i<=4;i++)
    {
    	cout<<a<<"-"<<b<<"-"<<c<<"-"<<d<<"="<<a-b-c-d<<endl;
    	t=a;a=b;b=c;c=d;d=t;
    }

    
    return 0;
}