Palindrome Or Not

July 10, 2019

Palindrome or not:-

In the C programming, the palindrome number check is done to check whether the variable inserted by the user is equal to the original number. This C program reverses the number (inserted by the user) with the help of while loop. After that, ‘if’ condition is applied to test if the reversed number is equivalent to the original digit or not.

Algorithm to check whether a number is palindrome or not:

Step 1: Start

Step 2: Prompt the user to insert a number

Step 3: Store the number in temporary variable

Step 4: Reverse the number

Step 5: Compare the temporary number with the reversed number

Step 6: If both the numbers are same, print the palindrome number

Step 7: Else printf “not palindrome number”

Step 8: Exit

Read Also: Program for Perfect Number or Not

Program to check whether a number is palindrome or not:

#include<stdio.h>

int main()

{

int n,r,sum=0,temp;

printf("insert a num=");

scanf("%d",&n);

temp=n;

while(n>0)

{

r=n%10;

sum=(sum*10)+r;

n=n/10;

}

if(temp==sum)

printf("palindrome num ");

else

printf("not a palindrome");

return 0;

}

Output

Insert a num: 151
Palindrome num

Insert a num: 5621
Not a palindrome num