摘要：If constructors were inherited in C++, it would cause many undesirable problems, and the main benefit of inheritance of members would not apply to con 阅读全文

摘要：上面的例子主要是想知道B，C是否会有自己的虚表指针，结果我用gdb -g test.cpp进行调试，发现： p a -> {_vptr.A = 0x400c28 <vtable for A+16>, i = 4197277} p b -> {<A> = {_vptr.A = 0x400c10 <vt 阅读全文

摘要：直接看例子就好： Note keyword virtual here. virtual inheritance. virtual not needed here. It is necessary to initialize all virtual base classes explicitly in 阅读全文

摘要：Token-Pasting Operator (##)The double-number-sign or “token-pasting” operator (##), which is sometimes called the “merging” operator, is used in both 阅读全文

摘要：int j = 0;int &i = j++; //出错临时变量j++被引用i所绑定，出错。 阅读全文

摘要：参考：http://blog.sina.com.cn/s/blog_5c0172280100ut4o.html1、char *s="abc";看这个赋值：右边，是"abc"，是个字符串常量，存在于内存某处(我的机器上是ds:0x0046f034)，程序员不知道，编译器安排的，也没必要知道(当然，这个... 阅读全文

摘要：#include "stdafx.h"#include #include using namespace std;//定义一个错误类class RangeException{public: const char* range_error; RangeException(const char* s):range_error(s){}};double Fuc(double x, double y){ if(y == 0){ throw RangeException("error of dividing zero.\n"); //抛出一个错误 } retu.. 阅读全文