palindrome programs

[rambos]

i need to wirte a program for a class and i have absolutley no idea as how to do it can you help me out. these are the requirement:Write a program to check if a given positive integer is a palindrome or not. A palindrome number is one that read the same forward and backwards. Your program MUST use while statements only.

[xuftugulus]

No it will not be possible to get your program written, with someone explaining it.
We can guide you though through your attempts to write it using C.

[TWIXMIX]

I'd probably give a stack of try, read up on it if you don't know how to implement them.

They work on a last in last out basis so just do checks that way. It's actually a pretty simple problem once you understand stacks.

This might break the whole while statement though. SO I'm sure the guy above me's response will work.

[dirtydrummer]

stack what is a stack?
Whats it have to do with while statements

[zacs7]

> stack what is a stack?
http://www.nist.gov/dads/HTML/stack.html

[maverix]

one way to find out is to reverse the number and check if the resulting number is equal to the original number.

initialize r_num to 0
while num is positive
       multiply r_num by 10 and add last digit of num to it
       discard the last digit of num

cheers
maverix

[dirtydrummer]

how would you use that in a while statement.
If while is while(x>0).
with the double remainder value.

[esbo]

Try this!!

#include <stdio.h>
#include <string.h>
main(){
	int thenumber=12343231;
	char numbuf[100];
	int numlen;
	int offset=0;
	int result=0;
		sprintf(numbuf,"%d",thenumber);
		numlen=strlen(numbuf);
		while(offset<numlen-offset){
			if (numbuf[offset]!=numbuf[numlen-offset-1]){ result=1;break;}
			offset++;
		}
		if (result==0) printf("\nPalindrome");
		else printf("\nNot Palindrome");
}

[ThLstN]

While statements only right? Try this..

#include<stdio.h>

int main() {
    char number[9];
    char temp[9];
    int i = 0,j = 0,flag;
    printf("Enter a number : ");
    scanf("%9[^\n]",number);
    
    while(number[i]!='\0') i++;
    temp[i--] = '\0';
    
    while(i+1) temp[i--] = number[j++];
        
    while(temp[i]!='\0') {
        flag = temp[i]!=number[i++]? 1 : 0;
    }
    
    flag? puts("Not a palindrome") : puts("Palindrome");
    return 0;   
}

[esbo]

Try submitting this and let us know the results.

#while <while.h>
#while <while.h>
while(){
	while while=while;
	while while[while];
	while while;
	while while=while;
	while while=while;
		while(while,"while",while);
		while=while(while);
		while(while<while-while){
			while (while[while]!=while[while-while-while]){ while=while;while;}
			while++;
		}
		while (while==while) while("\nwhile");
		while while("\nwhile while");
}