Program to Display Reverse Numbers

January 31, 2023

Reverse Number

We will write a C program to display the reverse of the given number and the number will be entered by the user. This will help to understand the basic structure of programming. In this program , we will display the reverse of given numbers easily by using proper syntax and algorithms.

Program to Display Reverse Numbers

Working of Program :

In the program, we will require some numbers from the user to display the reverse of the given numbers.

Syntax for while() loop:

while(condition)
{
    // Statements
    // Increment / Decrement
}

Problem 1

Write a program to reverse the given number.

  • Firstly, we have to enter the any number.
  • Then print that reverse number.

Code

Run 
#include<stdio.h>
int main ()
{
  int n = 4567, reverse = 0, rem;
  while (n != 0)
    {
      rem = n % 10;
      reverse = reverse * 10 + rem;
      n /= 10;
    }
  printf ("Reversed number = %d", reverse);
  return 0;
}

Output

Reversed number = 7654
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Note:

In the following program we will display the reverse number using do-while() loop.

Syntax for do – while() loop:

do
{
    // Statements
    // Increment / Decrement
}
while(condition)

Problem 2

Write a program to display the reverse number using do – while() loop.

  • Firstly, we have to enter the any number.
  • Then print that number is  palindrome or not.

Code

Run 
#include<stdio.h>
int main ()
{
  int n = 8967, a, r, s = 0;
  a = n;
  do
    {
      r = n % 10;
      s = s * 10 + r;
      n = n / 10;
    }
  while (n > 0);
  printf ("\nThe Reverse Number = %d",s);
  return 0;
}

Output

The Reverse Number = 7698

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