100 primeros primos

#include <iostream>

using namespace std;

int num = 2, divisor = 2, contador = 1;

bool esPrimo( int num, int divisor );

int main()
{
  while ( contador <= 100 ){
    if ( esPrimo( num, divisor ) == true ){
        cout<< num <<"\n";
        contador++;
        divisor += 2;
        ++num;
    }
    else {
        ++num;
        divisor = 2;
    }
  }
}

bool esPrimo ( int num, int divisor )
{
  if ( num == 2 ){
    return 1;
  }
  else while ( divisor > 1 and divisor < num ){
    if ( num % divisor != 0 ){
      ++divisor;
    }
    else return 0;
  }
}