C-Program To Check For Palindrome

Code 1:C program to find whether a number is palindrome or not

#include<stdio.h>

int main()

{

    int num,r,sum=0,temp;

    printf("Enter a number: ");

    scanf("%d",&num);

    temp=num;

    while(num)

    {

         r=num%10;

         num=num/10;

         sum=sum*10+r;

    }

    if(temp==sum)

         printf("It is a palindrome");

    else

         printf("It is not a palindrome");

    return 0;

}

output:

Enter a number: 191

  It is a palindrome
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Code 2:C-Program to check for palindrome using for loop

#include<stdio.h>

int main()
{

    int num,v,sum=0,temp;

    printf("Enter a number: ");

    scanf("%d",&num);

   
    for(temp=num;num!=0;num=num/10)
    {

         v=num%10;

         sum=sum*10+v;

    }

    if(temp==sum)

         printf("IT is a palindrome");

    else

         printf("IT is not a palindrome");

    return 0;

}

output:

Enter a number: 191

IT is a palindrome

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Code 3: C program to find palindrome numbers in given Range

#include<stdio.h>

int main()

{

    int num,v,sum,temp;

    int min,max;

    printf("Enter the minimum range: ");

    scanf("%d",&min);

    printf("Enter the maximum range: ");

    scanf("%d",&max);

    printf("Palindrome numbers in given range are: ");

     
     for(num=min;num<=max;num++)
       {

         temp=num;

         sum=0;

         while(temp){

             v=temp%10;

             temp=temp/10;

             sum=sum*10+v;

         }

         if(num==sum)

             printf("%d ",num);

    }

    return 0;

}

output:

Enter the minimum range:1

Enter the maximum range:20

Palindrome numbers in given range are: 1 2 3 4 5 6 7 8 9 11

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Code 4:C-Program to check for palindrome using using recursion

#include<stdio.h>

int checkPalindrome(int);

int main()
{

    int num,sum;

    printf("Enter a number: ");

    scanf("%d",&num);

    sum = Palin(num);

    if(num==sum)

         printf("IT is a palindrome");

    else

    printf("IT is not a palindrome");

    return 0;

}

int Palin(int num)
{

    static int sum=0,v;

    if(num!=0){

         v=num%10;

         sum=sum*10+v;

         Palin(num/10);

    }

    return sum;

}

output:

Enter a number:192

IT is not a palindrome