22 lines
436 B
C++
22 lines
436 B
C++
#include <iostream>
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using namespace std ;
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bool is_perfect( int ) ;
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int main( ) {
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cout << "Perfect numbers from 1 to 33550337:\n" ;
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for ( int num = 1 ; num < 33550337 ; num++ ) {
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if ( is_perfect( num ) )
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cout << num << '\n' ;
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}
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return 0 ;
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}
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bool is_perfect( int number ) {
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int sum = 0 ;
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for ( int i = 1 ; i < number ; i++ )
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if ( number % i == 0 )
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sum += i ;
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return sum == number ;
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}
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