Thread: A function to reverse a string and return it...

An array isn't a pointer in c. You can't write something like

char s[180]; ++s;
and sizeof s returns 180

Any time you pass an array into a function it decays into a pointer.

Deckard, thnx for your code. But my goal is to write a recursive function, i already knew the iterative way, but i realy find difficult in using recursive functions in this .

YES YES YES i finally got it, worked out the solution for palindrome, the key was just to add 2 more arguments to the function. Here's the code and thnx for all help from start to finish.

Code:

#include <stdio.h>

#define SIZE 6

int palindrome( char string[], int start, int end );

int main()
{
   char string[ SIZE ] = "radar";

   if ( palindrome( string, 0, SIZE - 2 ) == 1 )
      printf( "It IS a palindrome.\n" );
   else
      printf( "It is NOT a palindrome.\n" );

   getch();
   return 0;
}

int palindrome( char string[], int start, int end )
{
   int length = 0;
   int i = 0;

   if ( start == end )
      return 1;

   while ( string[ i++ ] != '\0' )
      length++;

   if ( length - 1 == 1 || length - 1 == 0 )
      return 1;
   else if ( string[ start ] != string[ end ] )
      return 0;
   else
      return palindrome( string, start + 1, end - 1 );
}