Digital Clock Project in C

Overview

Create a digital clock using C programming.
User can view the current time and it updates every second.

Imports Needed

#include <stdlib.h>
#include <time.h>
#include <stdbool.h>
#include <unistd.h> (for Linux/Mac) or #include <windows.h> (for Windows)

Variable Declarations

time_t raw_time;
struct tm *p_time;
bool is_running = true;*

Seed Random Number

Set seed using srand(time(NULL));

Welcome Message

Print title: "Digital Clock"

Main Loop

Use a while loop to continue while is_running is true.
Use sleep(1); to update every second.

Update Time

Update raw_time using time(&raw_time);
Call p_time = localtime(&raw_time); to convert to local time.

Print Time

Print current time using printf() with formatting:
- Hour: %02d, Minute: %02d, Second: %02d
Use p_time->tm_hour, p_time->tm_min, p_time->tm_sec

Exit Condition

Set is_running = false; to exit the loop if needed.

Complete Code Snippet

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

int main() {
    time_t raw_time;
    struct tm *p_time;
    bool is_running = true;

    printf("Digital Clock\n");

    while (is_running) {
        time(&raw_time);
        p_time = localtime(&raw_time);

        printf("%02d:%02d:%02d\r", p_time->tm_hour, p_time->tm_min, p_time->tm_sec);
        fflush(stdout);
        sleep(1);
    }

    return 0;
}

Summary

The program runs in a loop, updating the displayed time every second while tracking the hours, minutes, and seconds.

C Programming Digital Clock Project

Digital Clock Project in C

Overview

Imports Needed

Variable Declarations

Seed Random Number

Welcome Message

Main Loop

Update Time

Print Time

Exit Condition

Complete Code Snippet

Summary