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Execute Code Before Entering the Main Function

Execute Code Before Entering the Main Function

True or false: main is always the first function called in any C++ program? Technically, this is true in C. But in C++, there is one way you can excute code before main is called?and that’s by instantiating a global object that has a defined constructor. In this case, the constructor executes before entering main. Here’s an example:

#includeusing namespace std;class runfirst{  public:    runfirst(void)     {       cout << "we are in runfirst can you believe it" << endl;     } dofirst;int main(){  cout << "woops we arrived to the party late in main" << endl;  return 0;}
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