作用:
C++提供了初始化列表语法,用来初始化属性
语法:构造函数():属性1(值1),属性2(值2)... {}
示例:
class Person { public: ////传统方式初始化 //Person(int a, int b, int c) { // m_A = a; // m_B = b; // m_C = c; //} //初始化列表方式初始化 Person(int a, int b, int c) :m_A(a), m_B(b), m_C(c) {} void PrintPerson() { cout << "mA:" << m_A << endl; cout << "mB:" << m_B << endl; cout << "mC:" << m_C << endl; } private: int m_A; int m_B; int m_C; }; int main() { Person p(1, 2, 3); p.PrintPerson(); system("pause"); return 0; }
结果: