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Perfect Number

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#include <iostream>
#include <cmath>
#include <iomanip>
 
using namespace std;
 
 
 
int main ()
{
int startVal, endVal, sum = 0;
 
cout << "Enter starting integer: ";
cin >> startVal;
cout << "Enter ending integer: ";
cin >> endVal;
 
for (int i = startVal; i <= endVal; i++)
{
for (int j = 1; j <= i/2; j++)
{
if ( i % j == 0)
sum += j;
}
 
if (sum == i)
{
cout << "perfect number is: " << i << endl;
}
 
}
 
system("PAUSE");
return 0;
}

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