### This is a C program for Magic number.

A Magic number is a number whose sum of digits eventually leads to 1.

**Example#1:** 19 ; 1+9 =10 ; 1+0 = 1. Hence a magic number.

**Example#2**: 224; 2+2+4=10; 1+0 =1. Hence a magic number.

**Example#3: **874; 8+7+4=19; 1+9=10; 1+0=1. Hence a magic number.

* Also Check:* Java program to check for a magic number

#include <stdio.h> int singledigit(int x) // Recursive function that will return the sum of every single digit { if(x/10==0) return x; else return singledigit(x%10)+singledigit(x/10); // It will calculate the sum of the digits of the number. } int main() { int n; printf("ENTER NUMBER\n"); // To input a number scanf("%d",&n); while(n/10!=0) { n=singledigit(n); // Calculate the sum of the digits until you get a single digit i.e from 0 to 9 and then check if it is 1 } if(n==1) // After you get a single digit then check if the sum of the digits is eventually 1 then it is magical else not printf("Number is magic"); else printf("numebr is not magic"); }

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THE PROGRAMMEE IS NICE BUT IF IT IS TO BE DIFFICULT TO UNDERSTAND