C program to increment the number by a given value every second

In this post, I am going to write a very simple C program to increment the number by a given value every second. This program also helps you to understand how to use the sleep() function in the C language.

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

int main(void) {
	
    //declare variables
    int num = 0; 
    int increment; 
    
    //get the increment number from user
    printf("Enter increment value:");
    scanf("%d", &increment);
    
    //loop till the 'num' value equals to 100, we'll add the 'increment' number every 1 second and print it.
    while(num <= 100) {
        sleep(1); // Wait for a second 
        num += increment; // add the 'num' value with the 'increment'
        printf("%d\n", num); // Print the current value of num
    }

    return 0;
}

Example Output of the above program is here,

Enter increment value:5
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100

--------------------------------
Process exited after 23.76 seconds with return value 0
Press any key to continue . . .

I believe this post would have helped you to understand how to use the sleep() function in C programming.