The following code shows how to Find Whether a Number is a Strong Number or Not in C.
//Find Whether a Number is a Strong Number or not
#include <stdio.h>
long factorial(int n)
{
long f=1, i;
for(i=1;i<=n;i++)
f*=i;
return f;
}
int main()
{
int mynum, temp, rem;
long digitsum=0;
printf("Enter a Number: ");
scanf("%d", &mynum);
temp=mynum;
while(temp!=0)
{
rem=temp%10;
digitsum+=factorial(rem);
temp=temp/10;
}
if(digitsum==mynum)
{
printf("%d is a Strong Number!\n", mynum);
}
else
{
printf("%d is not a Strong Number!\n", mynum);
}
return 0;
}
Output
Enter a Number: 145
145 is a Strong Number!
Enter a Number: 384
384 is not a Strong Number!
Enter a Number: 40585
40585 is a Strong Number!
Further Reading
50+ C Programming Interview Questions and Answers
C Program to Find Factorial of a Number
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