Check how long it takes for conhost to print

Question

I have an array of booleans each representing a number. I am printing each one that is true with a for loop: for(unsigned long long l = 0; l<numt; l++) if(primes[l]) cout << l << endl; numt is the size of the array and is equal to over 1000000. The console window takes 30 seconds to print out all the value, but a timer I put in my program says 37ms. How do I wait for all the values to finish printing on the screen in my program so I can include that in my time.

Answer 1

Try this:

#include <windows.h>
...

int main() {
    //init code

    double startTime = GetTickCount();

    //your loop

    double timeNeededinSec = (GetTickCount() - startTime) / 1000.0; 
}