using namespace std meaning in cpp

经实验验证修正对usingnamespacestd的认识

cpp #include iostream> using namespace std; int main() { cout

h>usingnamespacestd;stringreverse(string s){if(s==""){return"";}

cpp程序设计进阶篇笔记主要还是ppt的截图orz

cpp程序设计基础篇笔记主要是ppt的截图

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