构造函数与初始化列表

#include<bits/stdc++.h>
using namespace std;

class person
{
public:
    person(int a,int b,int c):m_a(a),m_b(b),m_c(c)
    {

    }
    int m_a;
    int m_b;
    int m_c;

};

void test()
{
    person p(10,20,30);
    cout << "p ma = " << p.m_a << endl;
    cout << "p mb = " << p.m_b << endl;
    cout << "p mc = " << p.m_c << endl;
}

int main()
{
    test();
    return 0;
}