Thread: Palindrome checker for numbers

  1. #1
    Registered User
    Join Date
    Jul 2011
    Posts
    2

    Palindrome checker for numbers

    I have read a lot of topics about this problem.
    So:

    Code:
    #include <stdio.h>
    
    int main(){
      int number,temp,remainder,sum=0;
    
      printf("Input a number:\n");
      scanf("%d",&number);
      temp = number;
    
      while(number>0)
        {
          remainder=number%10; //Gets Last Digit
          number/=10;          //Truncates Last Digit
          sum=sum*10 + remainder; //Builds value of reversed number
         }
    
       if (sum==temp)
         printf ("\nThe Number Is A Palindrome ");
       else
         printf ("\nThe Number Is Not A Palindrome ");
    
       getch ();
       return 0;
    
    }

  2. #2
    ATH0 quzah's Avatar
    Join Date
    Oct 2001
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    14,826
    Is there a question in there some place?


    Quzah.
    Hope is the first step on the road to disappointment.

  3. #3
    Or working on it anyways mramazing's Avatar
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    Dec 2005
    Location
    Lehi, UT
    Posts
    121
    I seem to remember an ACM competition problem within the realm of your... statement. But, again, you have not asked a question.
    -- Will you show me how to c++?

  4. #4
    Registered User claudiu's Avatar
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    Feb 2010
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    London, United Kingdom
    Posts
    2,094
    Quote Originally Posted by Ákos Kovács View Post
    I have read a lot of topics about this problem.
    Well done.
    1. Get rid of gets(). Never ever ever use it again. Replace it with fgets() and use that instead.
    2. Get rid of void main and replace it with int main(void) and return 0 at the end of the function.
    3. Get rid of conio.h and other antiquated DOS crap headers.
    4. Don't cast the return value of malloc, even if you always always always make sure that stdlib.h is included.

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