1.using namespace std; 告訴編譯器使用 std 命名空間。

2.C++ 關(guān)鍵字

C++ 中的保留字.這些保留字不能作為常量名、變量名或其他標(biāo)識符名稱。

asm else new this

auto enum???? operator throw

bool explicit?? private??? TRUE

break???? export??? protected????? try

case extern??? public???? typedef

catch????? FALSE???? register?? typeid

char float reinterpret_cast??? typename

class for?? return???? union

const????? friend???? short????? unsigned

const_cast???? goto?????? signed??? using

continue if???? sizeof???? virtual

default?? inline????? static????? void

delete???? int?? static_cast???? volatile

do?? long struct???? wchar_t

double?? mutable switch??? while

dynamic_cast namespace??? template

記單詞時間~~~