Question

How to find out time taken in running a c program?

Answer 1



Execution time of C program

c code-timing

I have a C program that aims to be run in parallel on several processors. I need to be able to record the execution time (which could be anywhere from 1 second to several minutes). I have searched for answers, but they all seem to suggest using the clock() function, which then involves calculating the number of clocks the program took divided by the Clocks_per_second value.

I'm not sure how the Clocks_per_second value is calculated?

In Java, I just take the current time in milliseconds before and after execution.

Is there a similar thing in C? I've had a look, but I can't seem to find a way of getting anything better than a second resolution.