palidrome.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>

#define MAX_PAL_LEN     20

bool is_palindrome(const char[]);
    /* supposed to return |true| i.e. 1 if the given string is a palindrome,
     * |false| i.e. 0 otherwise.
     */

int
main()
{
    const char data[][MAX_PAL_LEN] =
	{ "hello", "a", "did", "noon", "level", "redder", "" };
    for ( unsigned int i = 0 ; i < sizeof data / sizeof *data ; ++i )
	printf("is_palindrome(\"%s\"): %i\n", data[i], is_palindrome(data[i]));
}


bool
is_palindrome(const char s[])
{
    int l = strlen(s);
    for ( int i = 0 ; i < l/2 ; ++i ){
   
	printf("%c and %c\n",s[i], s[l-i]);

        if ( s[i] != s[l-i] )
         return  false;
	}
    return  true;
}