映证C++的开始.

/*  Date:13-7-13.  今天就算开始学习C++了，  写了一个浓厚的有面向对象的气息.(a+b).*/#include<iostream>using namespace std;class sum{    private:       int a;       int b;    public:       void input();       void Sum1();};void sum::input(){cin>>a>>b;}void sum::Sum1(){cout<<a+b<<endl;}int main(){    class sum a1;    a1.input();    a1.Sum1();}