C# vs C - Big performance difference

Question

I\'m finding massive performance differences between similar code in C anc C#.

The C code is:

#include 
#include 
#inclu         


        

Answer 1

To see if the loop is being optimised away, try changing your code to

root += Math.Sqrt(i);

ans similarly in the C code, and then print the value of root outside the loop.