/***************
A very simple program to implement a stopwatch
youtube.com/vamcode
***************/

#include<stdio.h>
#include<unistd.h>

int main(){

    int hours = 0 , minutes = 59 , seconds = 56 , milliseconds = 0;
    while(1){
        printf("\r\t%.2d HOURS : %.2d MINUTES : %.2d SECONDS : %d",hours, minutes,seconds, milliseconds);
        fflush(stdout);
        usleep(1000);
        ++milliseconds;
        if(milliseconds == 1000){ /*edit: previously was if(milliseconds == 999) */
            milliseconds = 0;
            ++seconds;
        }
        if(seconds == 60){
            milliseconds = 0;
            seconds = 0;
            ++minutes;
        }
        if(minutes == 60){
            milliseconds = 0;
            seconds = 0;
            minutes = 0;
            ++hours;
        }
    }
    return 0;
}