// Pantea Aria

// pointers

// Write a program that:
// Declares and initializes an array of 5 integers (e.g., {10, 20, 30, 40, 50}) in main.
// Passes the array and its size to a function called half_array.
// Print the array before and after calling the function.

#include <stdio.h>
void half_array(int *numbers, int size);
int main() {
    int numbers[5] = {10, 20, 30, 40, 50};

    printf("Original array: ");
    for (int i = 0; i < 5; i++) {
        printf("%d ", numbers[i]);
    }
    printf("\n");
    
    // print out the address of array (the name of the array)
    // 1. using the name of the array
    printf ("The address of array is %p\n", numbers);
    // 2. the address of the first element in the array
    printf ("The address of array is %p\n", &numbers[0]);
    
    // call function half_array
    half_array(numbers, 5);
    
    
    printf("array after calling function: ");
    for (int i = 0; i < 5; i++) {
        printf("%d ", numbers[i]);
    }
    printf("\n");
    return 0;
}
void half_array(int *numbers, int size) {
    int i = 0;
    while (i < size) {
        numbers[i] = numbers[i] / 2;
        i++;
    }
    return;
}




    
 // print out the address of the array from the function too