Sum of all Odd and Even Numbers in C

A very simple program that I wrote using the C Programming language to sum all the values of odd and even numbers.

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Program Listing

#include <stdio.h>

 

int  main()

{

    int i, num, odd_sum = 0, even_sum = 0;

 

    printf("Enter the value of num\n");

    scanf("%d", &num);

    for (i = 1; i <= num; i++)

    {

        if (i % 2 == 0)

            even_sum = even_sum + i;

        else

            odd_sum = odd_sum + i;

    }

    printf("Sum of all odd numbers  = %d\n", odd_sum);

    printf("Sum of all even numbers = %d\n", even_sum);

}