SumAvgArray.c

/*
    C program to read N integers into an array A and
    a) Find the sum of negative numbers
    b) Find the sum of positive numbers
    c) Find the average of all numbers
    	*/
#include  <stdio.h>
 
void main()
{
    int array[10];
	int i, num, negative_sum = 0, positive_sum = 0;
	float total = 0.0, avg;
 
        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];
 
        }
 
        avg = total / num;
 
        printf("\nSum of all negative numbers =  %d\n", negative_sum);
 
        printf("Sum of all positive numbers =  %d\n", positive_sum);
 
        printf("\nAverage of all input numbers =  %.2f\n", avg);
 
}