C Exercises: Reads in a five-digit integer and determines whether or not it’s a palindrome

C Basic Declarations and Expressions: Exercise-82 with Solution

Write a C program that reads in a five-digit integer and determines whether or not it’s a palindrome.

Sample Input: 33333

Sample Solution:

C Code:

#include<stdio.h>
int is_Palindrome( int );


int main()
{
    int n;
    
    printf( "Input a five-digit number: " );
    scanf("%d", &n);
    
    if(is_Palindrome(n))
        printf("%d is a palindrome.", n);
    else
        printf("%d is not a palindrome.", n);
    return 0;
}

int is_Palindrome(int n) {
    int x = n;
    int reverse_num = 0;
    
    reverse_num += x/10000;
    x = x - ((x / 10000) * 10000);
    
    reverse_num += ((x/1000) * 10 );
    x = x - ((x / 1000) * 1000);
    
    reverse_num += ((x/100) * 100 );
    x = x - ((x / 100) * 100);
    
    reverse_num += ((x/10) * 1000 );
    x = x - ((x / 10) * 10);
    
    reverse_num += ((x%10) * 10000 );
    
    return n==reverse_num;
}

Sample Output:

Input a five-digit number: 33333 is a palindrome.

Pictorial Presentation:

Flowchart:

C programming Code Editor:

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