判断回文串

#include <stdio.h>
#include <string.h>
int judge(char str[])
{
	int length = strlen(str), i;
	for(i = 0; i < length/2; i++)
	{
		if(str[i] != str[length - 1 - i])
		{
			return 0;
		}
	}
	return 1;
}
int main()
{
	char str[256];
	while(gets(str))
	{
		int answer = judge(str);
		if(answer == 1)
		{
			printf("YESn");
		}
		else{
			printf("NOn");
		}
	}
	return 0;
}

#include <stdio.h>
#include <string.h>
int main()
{
	char str[256];
	gets(str);
	int length = strlen(str), i;
	for(i = 0; i < length/2; i++)
	{
		if(str[i] != str[length - 1 -i])
		{
			printf("NOn");
		}
		else
		{
			printf("YESn");
		}
	}
	return 0;
}