Thread: post-incremented when?

Code:

#include <iostream>
using namespace std;

int main()
{

 unsigned long factorial = 1,
               number = 0;

  cout <<" Enter number " ; // entered 12 as number
  cin >> number;

  for ( int counter = number; counter >= 1; counter -- )     // post increment counter
      factorial *= counter;    // value of counter is 12 * 12 ?

      cout << " " << factorial;   // answer



      return 0;
}

Hi i was wondering in the for structure where i have counter--.
And i have then counter * counter ,
does it multiply 12 * 12 ? or 12 * 11 and when does it get post decremented?

Thanks alot.

Add some cout lines and see for yourself

Code:

for ( int counter = number; counter >= 1; counter -- )
{
  cout << "counter : " << counter endl 
       << "factorial before: " << factorial <<endl;
  factorial *= counter;
  cout << "factorial after: " << factorial <<endl;
}

Also, this: -- is decrement. This: ++ is increment.