C Program to Reverse the String using Recursion

Code:

#include
#include

void reverse(char [], int, int);
int main()
{
    char str1[20];
    int size;

    printf("Enter a string to reverse: ");
    scanf("%s", str1);
    size = strlen(str1);
    reverse(str1, 0, size - 1);
    printf("The string after reversing is: %s\n", str1);
    return 0;
}

void reverse(char str1[], int index, int size)
{
    char temp;
    temp = str1[index];
    str1[index] = str1[size - index];
    str1[size - index] = temp;
    if (index == size / 2)
    {
        return;
    }
    reverse(str1, index + 1, size);
}

Output:

Enter a string to reverse: malayalam
The string after reversing is: malayalam

Enter a string to reverse: cprogramming
The string after reversing is: gnimmargorpc


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