#include
#include
using namespace std;
// comment next line out when debugging
#define NDEBUG
class Ship
{
public:
Ship( const float cargo_weight[], int length );
float operator[]( int index ) const;
// REQUIRE: 0 <= index < cargo_loads()
// RETURN: weight of load with specified index
int cargo_loads() const;
private:
vector weight_;
};
inline
Ship::Ship( const float weight[], int length )
: weight_( weight, weight+length )
{} // empty
inline
float Ship::operator[]( int index ) const
{
#ifdef NDEBUG
return weight_[index]; // don't check range when not debugging
#else
return weight_.at( index ); // check range when debugging
#endif
}
inline
int Ship::cargo_loads() const
{ return static_cast( weight_.size() ); }
int main( )
{
const int num_loads = 3;
const float weights[num_loads] = { 40.8f, 35.2f, 22.1f };
// make a ship and load it with cargo
Ship ship( weights, num_loads );
}