Thread: array function arguments & parameters

Hi all..it's me again...

Code:

// Write a function named sumarrays() that accepts two arrays as arguments, totals all values in both arrays, and returns the total to the calling program. Use the function created in exercise 7 in a simple program.

#include <stdio.h>

#define MAX 5

int array_1[MAX], array_2[MAX], count;

int sumarrays(int array_1[], int array_2[], int length);

int main()
{
    int a;

    for(count = 0; count < MAX; count++)
    {
        printf("Enter an integer value (array_1): ");
        scanf("%d", &array_1[count]);
    }
    
    for(count = 0; count < MAX; count++)
    {
        printf("Enter an integer value (array_2): ");
        scanf("%d", &array_2[count]);
    }

    int answer;

    answer = sumarrays(array_1, array_2, MAX);

    printf("Total of both arrays = %d\n", answer);

    return 0;
}

int sumarrays(int num_array_1[], int num_array_2[], int length)
{
    int a, total;

    total = 0;
    count = 0;
    
    for(count = 0; count < length; count++)
    {
        total += num_array_1[count];
    }

    for(count = 0; count < length; count++)
    {
        total += num_array_2[count];
    }

    return total;
}

please explain, how sum is being added with this line:

Code:

answer = sumarrays(array_1, array_2, MAX);

Thank you!!!

I wrote this code, it was a Q&A out of a Sam's Teach yourself C programming in 24 hours...