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Strong number is a number for which sum of factorials of the digits is equal to the given number.
Eg: let us consider 145 where sum of factorials of the digits= 1!+4!+5!=1+24+120=145 i,e., the given number.
c program for strong number is:
#include<stdio.h>
#include<conio.h>
void main()
{
int sof=0,n,dn,ctr,prod,rem;
printf("Enter the number\n");
scanf("%d",&n);
dn=n;
while(n!=0)
{
prod=1,ctr=1;
rem=n%10;
while(ctr<=rem)
{
prod=prod*ctr;
ctr=ctr+1;
}
sof=sof+prod;
n=n/10;
}
if(sof==dn)
{
printf("The number entered is strong number");
}
else
{
printf("The number entered is not a strong number");
}
}
By
Nagarjuna
sri indu ECE,
IBP.
Wiki User
∙ 14y ago
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