C Programming – HackerRank Solution | Special Number-5 |

Write a Modular C Programming code to solve Special Number-5, A number is a special number if the sum of the factorial of the digits is equal to the number.

Suri and Guru are talented students; they always want to be unique in their classes. After research, by referring to some mathematics books, Suri comes with a special number. A number is a special number if the sum of the factorial of the digits is equal to the number. Guru wants to implement the same by using a programming language. Please help Guru to solve the problem by using Problem Solving Framework and Write the modular C program.

Ex1: 145 is a special number.

Explanation

1!+ 4!+5!

1+24+120=145

Input Format

First-line indicates the number ‘N’

Constraints

10<=N<=1000000

Output Format

First-line prints YES if it’s a special number, else NO

Sample Input 0

2

Sample Output 0

YES

Sample Input 1

25

Sample Output 1

NO

Refer : C Programming HackerRank all solutions for Loops | Arrays | strings

 

 

CODE:

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>

int fact(int dig)
{
    int i,fact=1;
    for(i=1;i<=dig;i++)
    {
        fact=fact*i;
    }
    return fact;
}
void specail(int n)
{
int fact0=1,dig=0,sum=0,copy;
    copy=n;
    while(n!=0)
    {
        dig=n%10;
        fact0=fact(dig);
        sum=sum+fact0;
        fact0=1;
        dig=0;
        n=n/10;
    }
    if(copy==sum)
        printf("YES\n");
    else 
        printf("NO\n");
}
int main() {
int n;
    scanf("%d,",&n);
    specail(n);    
    return 0;
}

OUTPUT

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Input (stdin)

2
Your Output (stdout)

YES
Expected Output

YES

 

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