C++不是类的成员未知重写说明符已经定义或声明成员函数没有重载函数可以接受跳过明显的函数体意外的标记位于前的问题解决,程序员大本营,技术文章内容聚合第一站。
void teach();a后面有一个多余的a。另外所有定义要么在声明的时候就加上，要么全部挪到类外去。否则编译器会认为定义和声明是一个函数的两个重载版本而报错。
Member variables are always initialized in the order they are declared in the class definition, so write them in that order in the constructor initialization list. Writing them in a different order just makes the code confusing because it won't run in the order you see, and that can make ...