how to fix “not recognized as an internal or external command” issue

Question

when i write a simple code like

#include 
using namespace std;

int main() {
    cout << \"Hello World\";
    return 0;
}

<

Answer 1

CTRL+F7 only compiles the program. It doesn't build it. There are two stages needed to build a program, the compile stage and the link stage. Just press F7 instead of CTRL+F7 and try again.