fork(1) download
copy 
  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int isPalindrome(char *str);
  5.  
  6. int main(){
  7.     char str[100];
  8.  
  9.     printf("Enter a string: ");
  10.     gets(str);
  11.  
  12.     puts(str);
  13.  
  14.     if(isPalindrome(str))
  15.         printf("%s is a palindrome!\n", str);
  16.     else
  17.         printf("%s is not a palindrome!\n", str);
  18.  
  19.     return 0;
  20. }
  21.  
  22. int isPalindrome(char *str){
  23.     char revStr[100];
  24.     int i, j, len = strlen(str), flag = 0;
  25.  
  26.     for(i=0, j=len-1; j>=0; i++, j--)
  27.         revStr[i] = str[j];
  28.  
  29.     revStr[i] = '\0';
  30.     puts(revStr);
  31.  
  32.     if(strcmp(str, revStr) == 0)
  33.         flag = 1;
  34.  
  35.     return flag;
  36. }
Success #stdin #stdout 0s 4912KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Enter a string: 

 is a palindrome!
https://ideone.com/n7WGdP
language:
C (gcc 8.3)
created:
3 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!