Can anyone explain the algorithm of the following C program?

Question

#include <stdio.h>

int add_up (int *a, int num_elements);

int main() {
int orders[5] = {100, 220, 37, 16, 98};

printf("Total orders is %d\n", add_up(orders, 5));

return 0;
}

int add_up (int *a, int num_elements) {
int total = 0;
int k;

for (k = 0; k < num_elements; k++) {
total += a[k];
}

return (total);
}

Answer 1

It calls a function which takes two arguments, i.e. A pointer of an array of integers, and the number of elements in that array. The function then adds up all the elements within an array, and returns the sum.