File Cannot Be Found - Lovely Crash

...instead of crashing without any error messages

std::ifstream ifs (mystr, std::ios::in | std::ios::binary);

if (ifs.is_open()) {
        cout<<"The file is read successfully! :)"<<endl;}
else {
        // show message:
        cout << "Error opening file!"<<endl;
        cout << "The file cannot be found in the given path."<<endl;
        cout<< "The program will be closed." <<endl;
        system("PAUSE") ;
        exit(EXIT_FAILURE);
 }