#include <stdio.h>

const int SIZE = 5;

int sum_array(int* array, int size) {
    int sum = 0, i;

    for (i = 0; i < size; i++) {
        sum += array[i];
    }

    return sum;
}

int main() {
    int array[SIZE];

    for (int i = 0; i < SIZE; i++) {
        array[i] = i * SIZE;
    }

    int sum = sum_array(array, SIZE);
    printf("The sum is %d\n", sum);

    return 0;
}