C program to find sum of first n odd positive numbers

C program to find sum of first n odd positive numbers. Take a number n as input.

Sol.

/**
 * C program to print the sum of first n odd positive numbers
 */

#include <stdio.h>

int main()
{
    /* odd numbers are integers */
    int count, n, sumOfOddNum=0;
    
    /* First positive odd numbers starts from 1 and end at n. */
    printf("Enter value of n : \n");
    scanf("%d", &n);
    
    /* Find the sum of first n odd positive numbers */
    /*Positive odd numbers are 1,3,5,7....
    * So increment count = 1 by 2 each time */
    
    for(count=1; count<=n; count=count+2)
    {
        sumOfOddNum = sumOfOddNum + count;
    }

    printf("Sum of first n odd numbers = %d", sumOfOddNum);

    return 0;
}

Output :

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