text: #include <stdio.h>
  
  #define SIZE 10 
  
  int sum(int ar[], int n);
  
  int main(void)
  {
  	int		marbles[SIZE] = {20, 10, 5, 39, 4, 16, 19, 26, 31, 20};
  	long		answer;
  
  	answer = sum(marbles, SIZE);
  
  	printf("The total number of marbles is %ld.\n", answer);
  	printf("The size of marbles is %zd bytes.\n", sizeof marbles);
  
  	return 0;
  }
  
  int sum(int ar[], int n)	// how big an array?
  {
  	int		i;
  	int		total = 0;
  
  	for (i = 0; i < n; i++) total += ar[i];
  
  	printf("The size of ar is %zd bytes.\n", sizeof ar);
  
  	return total;
  }
  