/*
 * C program to find the sum of odd and even numbers from 1 to N
 */
#include <stdio.h>

void 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);
}