re_StrRev.c

/* Aim: Write a function which displays a string in reverse order (Use Recursion)*/

#include<stdio.h>
#include<string.h>
#define size 100

void re_StrRev(char str[],int i); // re_StrRev Function Prototype

void main()
{
	char str[size];
	
	printf("\n Enter any string:-");
	scanf("%s",str);
	printf("\n");
	re_StrRev(str,strlen(str)-1);
	printf("\n \n");
} // End of main

// re_StrRev Function 
void re_StrRev(char str[],int i)
{
	
	if(i>=0)
	{
	printf("%c",str[i]);
	re_StrRev(str,i-1);
	}
	
} // End of re_StrRev Function

/* Ouput of above code:-

[root@localhost Computer Science C]# cc e12b3.c
[root@localhost Computer Science C]# ./a.out

 Enter any string:-Halo

olaH
*/