#include <stdio.h>

int sum(int array[], int length);

int main(void) 
{
	int A1[] = {1,2,6,8,3,4,3};
	int A2[] = {100,100};
	int A3[] = {50,-50,100,-100,75,-75};
	
	printf("A1 sum is: %d\n", sum(A1, 7));
	printf("A2 sum is: %d\n", sum(A2, 2));
	printf("A3 sum is: %d\n", sum(A3, 6));
	
	
	
	return 0;
}

int sum(int array[], int length) 
{
	int sum_value = 0;
	for(int i = 0; i < length; i++)
	sum_value = sum_value + array[i];
	
	return sum_value;
}