C Program to Reverse a Number | Reverse Number Program in C | CodeTextPro

C program to reverse a number. This program reverses the number entered by the user and then prints it on the screen. For example, if a user will enter 12345 as input then 54321 will be printed as output. In our program, we use the modulus (%) operator to obtain the digits of a number. To invert a number look at it and write it from opposite directions or the output of the program is a number obtained by writing the original number from right to left.

Reverse Number

C program to find the reverse of a number

#include<stdio.h>

#include<conio.h>

main()

{

int n, r;

printf("Enter The Number:\n");

scanf("%d",&n);

for(r=0; n>0; n=m/10)

{

r=r*10;

r=r+(n%10);

}

printf("The Reverse Number is:\n %d",r);

getch();

}

Output of Program:

C Program to Reverse The Number

C Program to Reverse the number using recursion

#include <stdio.h>

long reverse(long);

int main()

{

   long n, r;

   

   scanf("%ld", &n);

   r = reverse(n);

   printf("%ld\n", r);

   return 0;

}

long reverse(long n) 

{

   static long r = 0;

   

   if (n == 0)

      return 0;

   

   r = r * 10;

   r = r + n % 10;

   reverse(n/10);

   return r;

}

Output of Program:

Reverse Number Using Recursion