**What is Magic Number?**

A number is said to be a **Magic** **Number **if the **sum of the digits **of that number, when multiplied by the reverse number of the sum of its digits, is **equal **to the **original number**.

**Example**: **1729 **is a magic number.

**C Magic Number:**

In the following C Program to check for magic Number, first, take the user input for the number which needed to be checked. Then, we find the **sum of the digits** of that number and then find the **reverse **of that sum of the digits.

Lastly, check if the multiplication of reverse and sum of the digits is **equal **to original entered number or not. If it is equal then print “** Magic Number**” else print “

*” using if-else statement in c.*

**Not a magic Number****C Program to Check Whether a Number is Magic Number or Not**

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | #include <stdio.h> #include <stdlib.h> int main() { int n, temp; int revnum = 0, sumOfTheDigits = 0; //User Input printf("Enter a Number that you want to check:"); scanf("%d", &n); temp = n; //sum of the digits of n number calculation while (temp > 0) { sumOfTheDigits += temp % 10; temp = temp / 10; } //reversing the Sum of the Digits of n temp = sumOfTheDigits; while (temp > 0) { revnum = revnum *10 + temp % 10; temp = temp / 10; } //check for Magic Number and Display if (revnum *sumOfTheDigits == n) printf("%d is a Magic Number.", n); else printf("%d is not a Magic Number.", n); return 0; } |

The **Output **of magic Number in C Programming.