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Help me for App.Compute Time -urgent

I have a code, where I should compute the App.Compute Time, for n=1,5,10,20,30,40,50.Is there any GOOD EXPERT that can make this clear to me ? If yes than PLease write here
The code is:
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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int fib (int n)
  5.     {
  6.     if (n<3)
  7.         return (1);
  8.     else
  9.            return (fib(n-2)+fib(n-1));
  10.     }
  11. int main()
  12. {
  13. cout<<"Fibbonaciu Numbers: 1, 1, 2, 3, 5, 8, 13, 21,...\n"<<endl;
  14. int n, Result;
  15. cout<<"n = ";    cin>>n;
  16. Result=fib(n);
  17. cout<<"\n\tfib ( "<<n<<" ) = "<<Result;
  18.     cin.get(); cin.get();
  19.     return 0;
  20. }
Apr 9 '07 #1
2 1281
sicarie
4,677 Expert Mod 4TB
I'm sorry, I don't understand your question. You ask for some sort of timing function, but do you mean actual system time, or a set of numbers/levels for your fib. sequence?

As well, what have you tried on this?
Apr 9 '07 #2
RedSon
5,000 Expert 4TB
I think what the OP is asking is they want to calculate the time it takes to do this calculation in real time.

For this you want to get the current system time in milliseconds before you begin your fib calculation loop. Then you will again get the system time after you exit your loop. You can then subtract these values to get the real time run time of your application.
Apr 9 '07 #3

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