Using C language to realize the exchange between the contents of two arrays (provided that the array is the same size)

for example ： take  int arr1[] = { 1, 3, 5, 7, 9 };
                int arr2[] = { 2, 4, 6, 8, 0 };

The contents of these two arrays are exchanged

#include <stdio.h>
int main()
{
	int arr1[] = { 1, 3, 5, 7, 9 };
	int arr2[] = { 2, 4, 6, 8, 0 };
	int change[5] = { 0 };  // A temporary array is created here 
	int i = 0;
	for (i = 0; i < 5; i++)
	{
		change[i] = arr1[i];
		arr1[i] = arr2[i];
		arr2[i] = change[i];
	}
	int m = 0;
	for (m = 0; m < 5; m++)  // All printing of the array must be done with for loop 
	{
		printf("%d", arr1[m]);
	}
	printf("\n");
	int n = 0;
	for (n = 0; n < 5; n++)
	{
		printf("%d", arr2[n]);
	}
	return 0;
}

The key is ：

You can create a temporary array , You can also create a temporary variable

It's easy to get wrong ：

Print all array elements

common Wrong way ：

So only Random values are printed  

therefore ,

You can only choose for Loop to print all elements of the array