Question

i was wondering how i can get the CPU time from the start of a function and the CPU time of the end of the function and then take both times to figure out the total time. All this needs to be in Seconds and Milliseconds.

Answer 1

If you are using C or C++, you will have to include time.h header file.

#include <time.h>

void my_function() {

// Some code logic of the function here

}

int main() {

// assuming you want to calculate the execution time for my_function

clock_t startTime, endTime;

double totalDuration;

startTime = clock();

my_function();

endTime = clock();

totalDuration = (double(endTime - startTime))/ CLOCKS_PER_SEC // this will give you totalDuration in secs

}

totalDuration is all you need. The basic idea is to save time before function call and then after function returns, then subtract both the times and divide by CLOCKS_PER_SEC to get the time.

Please let me know if you need any further assistance. Thanks.