c24.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;
    
    cout<<"a+b+c-d="<<a+b+c-d<<endl;
    cout<<"a+b-c+d="<<a+b-c+d<<endl;
    cout<<"a-b+c+d="<<a-b+c+d<<endl;
    cout<<"-a+b+c+d="<<-a+b+c+d<<endl;
    
    cout<<"a+b-c-d="<<a+b-c-d<<endl;
    cout<<"a-b+c-d="<<a-b+c-d<<endl;
    cout<<"-a+b+c-d="<<-a+b+c-d<<endl;
    cout<<"a-b-c+d="<<a-b-c+d<<endl;
    cout<<"-a+b-c+d="<<-a+b-c+d<<endl;
    cout<<"-a-b+c+d="<<-a-b+c+d<<endl;
    
    cout<<"-a-b-c+d="<<-a-b-c+d<<endl;
    cout<<"-a-b+c-d="<<-a-b+c-d<<endl;
    cout<<"-a+b-c+d="<<-a+b-c-d<<endl;
    cout<<"a-b-c-d="<<a-b-c-d<<endl;
    
    return 0;
}