// Pantea Aria 

// functions, arrays

// Write a function called has_zero that:
// Takes an array of integers and its size as input (what is the prototype of this function?)
// Returns the number of 0 in the array

// function prototype
int has_zero(int array[], int length);

#include <stdio.h>

int main(void) {

    int array[] = {2, 0, 5, -3, 0 , 0, 4};
    // int result = has_zero(array, 7);
    printf ("the number of zeros is %d\n", has_zero(array, 7));

    return 0;
}     
// function body/definition
int has_zero(int array[], int length) {
    int i = 0;
    int number_of_zeros = 0;
    while (i < length) {
        if (array[i] == 0) {
            number_of_zeros = number_of_zeros + 1;
        }
        i++;
    }
    return number_of_zeros;
}