How to make a timer in C Programming?

Question

Hope for a quick answer

Can we make a timer that will repeat forever and keep going? I want it to go like:

Please type the seconds and minutes:(Hrs:mins:secs)

(Then the countdown)

(After countdown:)

Countdown complete!

Answer 1

Code Snippet

Have a look at this: https://stackoverflow.com/questions/17167949/how-to-use-timer-in-c

Update

I've turned the code snippet into a working program:

#include <time.h>
#include <stdio.h>

int main () 
{
    int iterations = 0;
    int msec = 0, trigger = 10; /* 10ms */
    clock_t before = clock ();
    do
    {
        printf("doing some heavy work here...\n");
        for (int i = 0; i < 1000000; i++) /* no operation */;
        /* Do something to busy the CPU just here while you drink a coffee
         * Be sure this code will not take more than `trigger` ms */
        clock_t difference = clock () - before;
        msec = difference * 1000 / CLOCKS_PER_SEC;
        iterations++;
    } while (msec < trigger);

    printf ("Time taken %d seconds %d milliseconds (%d iterations)\n", msec / 1000, msec % 1000, iterations);
    return 0;
}

Comments

It is showing incorrect. I mean there are errors.

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What I linked was just a code snippet, not a fully working program. It is just a fragment of code. It still needs to be put into a function, have the right header files included, etc.

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Oh! Ok. I get it now. But I am beginner. So I need the whole code.

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I got mine to work.  the include<ctime> has granularity to the nearest second and the only timer mentioned in the D.S.Malik text C++Programming - 8th edition published by Cengage).

This one is superior as goes to the milisecond (second / 1000).  Thanks and this does indeed help.

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I'm glad this was useful for you.

Happy coding!