C PROGRAM FOR STRONG NUMBER OR NOT

   

 

Consider the following I/O samples.

SAMPLE INPUT: 145

SAMPLE OUTPUT: STRONG NUMBER

A number is called a STRONG NUMBER if it leads to it's original number i.e., by performing the sum of factorials of its digits.

145 = 1! + 4! + 5! = 145

C PROGRAM:

#include<stdio.h>

int main()

{

    int n,dig,i,rem,res=0,temp;

    scanf("%d",&n);

    temp=n;

    printf("\n");

    while(n)

    {

        dig=n%10;

        rem=1;

        for(i=1;i<=dig;i++)

            rem=rem*i;

        res+=rem;

        n=n/10;

    }

    if(temp==res)

        printf("STRONG NUMBER");

    else

        printf("NOT A STRONG NUMBER");

    return 0;

}

OUTPUT:

The given source code in C program "FOR STRONG NUMBER OR NOT" is short and simple to understand. The source code is well tested in DEV-C++ and is completely error free. 

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