4. C PROGRAMMING LAB | Check Now → VTULOOP

C PROGRAMMING LAB –04] Develop a program to find the reverse of a positive integer and check for PALINDROME or NOT. Display appropriate messages.

Table of Contents

Algorithm

Step-1: Start
Step-2: [Read the number N]- Read N
Step-3: Initialize M=N, REV=0
Step-4: [Check for the value of N]- If N is not equal to 0 than goto the step 5 otherwise step 6
Step-5: digit = N%10;
- N = N/10;
- REV = REV * 10 + digit;
- [Executes these 3 steps until N value becomes to 0]
Step-6: Check for M= REV if so , than goto step 7 else step 8
Step-7: Print that the number is palindrome number
Step-8: Print that the number is not palindrome
Step-9: Stop

Flow Chart

Program -4 Source code

#include<stdio.h>

int main()
{
   int n,m,rev,digit;
   printf("Enter the value of n\n");
   scanf("%d",&n);

   rev=0;
   m=n;
   while(n!=0)
   {
      digit=n%10;
      n=n/10;
      rev=digit+10*rev;
   }
   printf("Reverse of %d is %d\n",m,rev);

   if(m==rev)
      printf("It is a palindrome\n");
   else
      printf("It is not a palindrome\n");
}