Why using namespace std is necessary here?
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Published on 2010-03-24T16:54:27Z
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2010/03/24
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#include <iostream>
using namespace std;
int main() {
cout << "!!!Hello World!!!" << endl; // prints !!!Hello World!!!
return 0;
}
If I remove the 2nd statement,the build will fail.
Why is it necessary?
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