Make a Digital Clock in C languege

 C Program to design a digital clock

In this program the clock will start with the time 00:00:00 and then it will work like a digital clock where it will show the time with hour, minutes and second.

STEP 1:Initialize hour, minute, seconds with 0.

STEP 2:Run an infinite loop.

STEP 3:Increase second and check if it is equal to 60 then increase minute and reset second to 0.

STEP 4:Increase minute and check if it is equal to 60 then increase hour and reset minute to 0.

STEP 5:Increase hour and check if it is equal to 24 then reset hour to 0.

Example

#include <stdio.h>

#include <time.h>//for sleep() function

#include <unistd.h>

#include <stdlib.h>

int main()

{

int hour, minute, second;

hour=minute=second=0;

while(1)

{

//clear output screen

system("clear"); // if "clear" doesn't work , use "CLS" in bricket

//print time in HH : MM : SS format

printf("%02d : %02d : %02d ",hour,minute,second);

//clear output buffer in gcc

fflush(stdout);

//increase second

second++;

//update hour, minute and second

if(second==60){

minute+=1;

second=0;

}

if(minute==60){

hour+=1;

minute=0;

}

if(hour==24){

hour=0;

minute=0;

second=0;

}

sleep(1);   //wait till 1 second

}

return 0;

}