Write a C program to accept a number and check whether it is perfect or not.(using function)
Solution:
Perfect Number - When sum of all positive divisors excluding that number is equal to that number.
Ex. 6 is the smallest perfect number.
Divisor of 6 are 1, 2, 3. Sum of divisors is : 1+2+3 = 6.
Output:
Solution:
Perfect Number - When sum of all positive divisors excluding that number is equal to that number.
Ex. 6 is the smallest perfect number.
Divisor of 6 are 1, 2, 3. Sum of divisors is : 1+2+3 = 6.
#include<stdio.h>
void perfect(int n)
{
int i=1,sum=0;
while(i<n)
{
if(n%i==0)
sum=sum+i;
i++;
}
if(sum==n)
printf("\n%d is a Perfect Number.",i);
else
printf("\n%d is NOT a Perfect Number",i);
}
int main()
{
int a;
printf("Enter Number : ");
scanf("%d",&a);
perfect(a);
return 0;
}
Output:
