Declare the instance variable for a class : Instance « Class « C++

1. C++
2. Class
3. Instance

Declare the instance variable for a class

  

#include <iostream>
using namespace std;

class Power {
  double b;
  
  int e;
  
  double val;
public:
  Power(double base, int exp);
  
  double getPower() { 
     return val; 
  }
};

Power::Power(double base, int exp)
{
  b = base;
  e = exp;
  val = 1;
  if(exp == 0) 
     return;
  for( ; exp > 0; exp--) 
     val = val * b;
}

int main()
{
  Power x(4.0, 2), y(2.5, 1), z(5.7, 0);

  cout << x.getPower() << " ";
  cout << y.getPower() << " ";
  cout << z.getPower() << endl;

  return 0;
}
           
         
    
  

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