Palindrome Program in C language

Check-or-detect-string-palindrome-program-in-c-langauge

Introduction:

Write a C program to check or detect given string is Palindrome or not ( Palindrome Program in C ).

palindrome is a word or other sequence of characters which reads the same backward as forward.

Examples of String Palindromes :

madam, wow, racecar, stats, etc.

Examples:

The program should accept a String as input and check if it is a Palindrome or not.

Here are few example expected input and outputs of program.

Example 1:

Input:

Output:

The string racecar is palindrome, As we can create the same string in forward direction and backward direction.

Example 2:

Input:

Output:

Example 3:

Input:

Output:

Algorithm to Check Palindrome Program :

  • We are going to use two pointer/index method.
  • One index will start from the beginning and goes in the forward direction and another index will starts from the end and comes in backwards direction.
  • Forward index 'i' starts with index and Backward index 'j' starts from 'len-1' ( Here 'len'is the length of the string, So we are starting from the end of the string)
  • At each iteration, We are going to check if the character at index 'i' and the character at index 'j' are same or not?
  • If the string is palindrome then all characters at index 'i' and index 'j' need to be same ( Until ‘i'<‘j’ condition break), If any of the values at index 'i' and index 'j' are not equal then the string is not a Palindrome.
  • If all the characters of 'i' and 'j' are equal until we reach the loop termination i.e ‘i'<‘j’, Then given number is a Palindrome.

Check Palindrome Program in C Language:

Palindrome Program Output:

We are using the GCC compiler on the Ubuntu Linux system. You can use your favourite IDE or Editor.

Palindrome-program-in-c-language

Conclusion:

We have discussed about the logic to detect or check the string palindromes using the C programming Language.

Related Reading:

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Venkatesh

Hi Guys, I am Venkatesh. I am a programmer and an Open Source enthusiast. I write about programming and technology on this blog.

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