Oct 14, 2011

C Program to check the given number is perfect or not.

C Program to check the given number is perfect or not?.  Perfect number is a positive integer that is equal to the sum of its proper positive divisors. example 6, divisor of 6 are 1, 2,3. Sum of divisors is 1+2+3=6.
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#include<stdio.h>
int main(){
 int num,i=1,sum=0;

 printf("Enter a number: ");
 scanf("%d",&num);

 while(i<num){
  if(num%i==0)
   sum=sum+i;
  i++;
 }
 if(sum==num)
  printf("%d is a perfect number",i);
 else
  printf("%d is not a perfect number",i);

 return 0;
}
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