array_basics_3.c

#include "stdio.h"

void set_int(int);

void set_array(int x[]); // a function prototype where the argument is an array of type int

int main(void) {
  // When we pass an array to a function it works on the actual array.
  // This is known as being passed by reference.
  // A variable on the other hand is passed by value
  
  int my_number = 10;
  
  int my_array[] = {1, 3, 5, 8};
  
  set_int(my_number);
  
  set_array(my_array);
  
  printf("my number is %i and the first value in my array is %i\n", my_number, my_array[0]);
}

void set_int(int x)
{
  x = 88;
}

void set_array(int x[])
{
  x[0] = 42;
}