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Added Magic Number.cpp #13

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Added Magic Number.cpp #13

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12a946c
Create Magic Number.cpp
dorakit Oct 1, 2021
02e2a73
Merge pull request #3 from dorakit/dorakit-patch-2
dorakit Oct 1, 2021
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38 changes: 38 additions & 0 deletions Magic Number.cpp
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Original file line number Diff line number Diff line change
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// CPP program to check if a number is Magic
// number.
#include<iostream>
using namespace std;

bool isMagic(int n)
{
int sum = 0;

// Note that the loop continues
// if n is 0 and sum is non-zero.
// It stops when n becomes 0 and
// sum becomes single digit.
while (n > 0 || sum > 9)
{
if (n == 0)
{
n = sum;
sum = 0;
}
sum += n % 10;
n /= 10;
}

// Return true if sum becomes 1.
return (sum == 1);
}

// Driver code
int main()
{
int n = 1234;
if (isMagic(n))
cout << "Magic Number";
else
cout << "Not a magic Number";
return 0;
}