c++ c++-faq copy-constructor assignment-operator rule-of-three
快速初学者的问题:
我是否必须初始化简单的类成员变量,或者它们是否保证在任何情况下都被赋予默认值？
例:
class Foo {
int i;
// is i==0 or do I need the following line for that?
Foo() : i(0) {}
};
谢谢!