jsa158的博客

《Google C++ 编程风格指南》对于头文件的包含顺序C system files.C++ system files.Other libraries' .h files.Your project's .h files.The preferred ordering reduces hiddendependencies. We want every header file to be com

#define __PRINT_MACRO(x) #x#define PRINT_MACRO(x) #x"="__PRINT_MACRO(x)#define MA 3#pragma message(PRINT_MACRO(MA))

关键字explicit可以禁止“单参数构造函数”被用于自动类型转换 class MyExample { explicit MyExample(int size); }; 没有explicit的话MyExample test= 80;能编译通过 而有explicit则不能，必需MyExample test(80);