what using namespace std means must

h>#include iostream>usingnamespacestd;//----------全屏/隐藏标题

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编程语言 > 详细code: #include bits/stdc .

c 编程题,怎样才能实现这个输入格式,有大佬知道吗,求助?

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

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