Create an array, implement the function init() to initialize the array, implement empty() to clear the array, implement the reverse() function to complete the inversion of the array elements

Just look at the code, nothing to say

#include<stdio.h>

#include<stdlib.h>//Because the system() function is used in the function

void init(int a[], int sz)//Initialize the array

{
	int i;
	for (i = 0; i < sz; i++)
	{
		a[i] = 0;
	}
}
 void empty(int a[], int sz)//Empty the array
{
	int i;
	for (i = 0; i < sz; i++)
	{
		a[i] = 0;
	}
}
 void reverse(int a[], int sz)//Inversion of array elements
 {
	 int i=0;
	 int tem=0;
	 for (i = 0; i < sz/2; i++)
	 {
		 has = a[i];
		 a[i] = a[sz - i - 1];
		 a [sz - 1 - i] = tem;


	 }
 }

intmain()
{
	int arr[3] = { 1, 2, 3 };
	int i = 0;
	int sz = sizeof(arr) / sizeof(arr[0]);
	for (i = 0; i < sz; i++)
	{
		printf("%d", arr[i]);


	}
	printf("\n");
	init(arr, sz);//Initialize the array
	for (i = 0; i < sz; i++)//print the initialized array
	{
		printf("%d", arr[i]);


	}
	printf("\n");
	for (i = 0; i < sz; i++)//Restore the original array
	{
		arr[i] = i + 1;
		printf("%d", arr[i]);
	}
	printf("\n");
	empty(arr, sz);//Empty the array
	for (i = 0; i < sz; i++)
	{
		printf("%d", arr[i]);


	}
	printf("\n");
	for (i = 0; i < sz; i++)//Restore the original array
	{
		arr[i] = i + 1;
		printf("%d", arr[i]);
	}
	printf("\n");
	reverse(arr, sz);//Invert the array
	for (i = 0; i < sz; i++)//print the inverse array
	{
		printf("%d", arr[i]);


	}


	system("pause");
	return 0;


}