C Program to Calculate Sum & Average of an Array

#include  <stdio.h>

#define MAXSIZE 10

void main()

{

    int array[MAXSIZE];

    int i, num, negative_sum = 0, positive_sum = 0;

    float total = 0.0, average;

 

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

    scanf("%d", &num);

    printf("Enter %d numbers (-ve, +ve and zero) \n", num);

    for (i = 0; i < num; i++)

    {

        scanf("%d", &array[i]);

    }

    printf("Input array elements \n");

    for (i = 0; i < num; i++)

    {

        printf("%+3d\n", array[i]);

    }

    /*  Summation starts */

    for (i = 0; i < num; i++)

    {

        if (array[i] < 0)

        {

            negative_sum = negative_sum + array[i];

        }

        else if (array[i] > 0)

        {

            positive_sum = positive_sum + array[i];

        }

        else if (array[i] == 0)

        {

            ;

        }

        total = total + array[i] ;

    }

    average = total / num;

    printf("\n Sum of all negative numbers =  %d\n", negative_sum);

    printf("Sum of all positive numbers =  %d\n", positive_sum);

    printf("\n Average of all input numbers =  %.2f\n", average);

}