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Author: vanshaj7-hub

perfectnums.cpp

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+
+#include <iostream>
+#include <stdlib.h>
+ using namespace std;
+//algorithm to check whether the given number is a perfect number(i.e. sum of factors of the number equal to the number itself)
+ int main()
+ {
+   int n;
+   int sum=0;
+ cout<<"enter the number you wan tot check"<<endl;
+ cin>>n;
+ for (int i=0 ; i<n ; i++)
+ {
+     if (n%i==0)
+     {sum+=i;}
+ }
+   if(sum == n) 
+   {cout<<"this number is a perfect number";} 
+
+   else 
+   {cout<<"not a perfect number";}  
+     
+     return 0;
+ }