Write a program to find whether the given number is a perfect number or not using functions.

Source Code

 #include<stdio.h>

 #include<conio.h>

 int perfect(int num)

 {

   int i,c=0,per=0;

   int ar[100];

   for(i=0;i<100;i++)

   {

     ar[i]=0;

   }

   for(i=1;i<num;i++)

   {

        if(num%i==0)

        {

     ar[c]=i;

     c++;

        }

   }

   for(i=0;i<c;i++)

   {

     per+=ar[i];

   }

   return per;

 }

 int main (int argc, char *argv[])

 {

   clrscr();

   int n,p;

   printf("\n Enter the number: ");

   scanf("%d",&n);

   p=perfect(n);

   printf("\n The number %d is",n);

   if(n==p)

     printf(" perfect number");

   else

     printf(" not an perfect number");

   getch();

 }

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