Write a C program to read a string and check whether it is a palindrome or not (without using library functions). Output the given string along with suitable message.Palindrome is a word, sentence, group of characters, or number, that remains same, when reversed.
For example: GADAG, 9009… Read more about C Programming Language .
For example: GADAG, 9009… Read more about C Programming Language .
/*********************************************************** * You can use all the programs on www.c-program-example.com * for personal and learning purposes. For permissions to use the * programs for commercial purposes, * contact [email protected] * To find more C programs, do visit www.c-program-example.com * and browse! * * Happy Coding ***********************************************************/ #include <stdio.h> #include <conio.h> #include <string.h> void main() { char string[25], revString[25]={''}; int i,length = 0, flag = 0; clrscr(); fflush(stdin); printf("Enter a stringn"); gets(string); for (i=0; string[i] != ''; i++) /*keep going through each */ { /*character of the string */ length++; /*till its end */ } for (i=length-1; i >= 0 ; i--) { revString[length-i-1] = string[i]; } /*Compare the input string and its reverse. If both are equal then the input string is palindrome. Otherwise it is not a palindrome */ for (i=0; i < length ; i++) { if (revString[i] == string[i]) flag = 1; else flag = 0; } if (flag == 1) printf ("%s is a palindromen", string); else printf("%s is not a palindromen", string); } /*End of main()*/
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3 comments on “C program to check whether a given string is palindrome or not”
Can I know Why there fflush(stdin); is used
Hello,
Good question. I assume you know why fflush is used in general. I'm sorry, I can't recall why I had to fflush in this program. The program is working fine without it too.
You can find many discussion threads on internet about this. I'm leaving it as it is for the time being. Will remove when I get time to find more about this.
Thanks for bringing this up btw.