using namespace std cout

let's work hard." endl; #define weekend() cout "weekend.

using namespace std;intmain(){char a[50]; cout "

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

为什么我用了#include iostream> using namespace std;还是有错

1 2 3 4 5 6 7 8 9 10 #include iostream> using namespace std

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