Write a C Program To Reverse an Array Using Recursion

In this tutorial, we are going to see how to write a C program to reverse an array using recursion. For example, if ‘arr’ is an array of integers with three elements such as:

arr[0] = 1
arr[1] = 2
arr[2] = 3

Then, by reversing the array we will have:

arr[0] = 3
arr[1] = 2
arr[2] = 1

There are four ways to reverse an array in C, by using for loop, pointers, recursion, or by creating a function.
 

 

Write a C Program To Reverse an Array Using Recursion

#include <stdio.h>

// recursive function to reverse an Array
void reverse(int i, int n, int arr[])
{
	if(i==n)
	{
		return ;
	}
	else
	{
		reverse(i+1, n, arr);
		printf("%d ", arr[i]);
	}
}


int main()
{
   	int i, n, arr[50];

   	printf("Enter size of array: ");
   	scanf("%d",&n);

   	printf("Enter the elements of the array: ");
   	for (i = 0; i < n; i++)
          scanf("%d", &arr[i]);
  
   	printf("After reversing the array: ");
   	// call the recursive function 
   	reverse(0, n, arr);

   	return 0;
}

Output:

Enter the number of elements in the array: 3
Enter the elements of the array: 1 2 3       
The reversed array is:  3 2 1

 

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