class Temperature
{
private:
float highTemp, lowTemp; //private data members.
public:
Temperature(float h, float l);
void UpdateTemp(float temp);
float GetHighTemp (void) const;
float GetLowTemp (void) const;
};
Discussion
The constructor must be passed the initial high and low temperature
for the object. These values can be changed by the method UpdateTemp.
The methods GetLowTemp and GetHighTemp are const functions since they
do not alter any data members in the class. The class is in "temp.h".
Example
//boiling/freezing point of water in Fahrenheit
Temperature fwater(212, 32);
//boiling/freezing point of water in Celsius
Temperature cwater(100,0);
cout << "Water freezes at " << cwater.GetLowTemp << " C"
<< endl;
cout << "Water boils at " << fwater.GetHighTemp << " F"
<< endl;
Output: Water freezes at 0 C
Water boils at 212 F
Temperature Class Implementation
//constructor. assign data h to highTemp and l to lowTemp
Temperature:: Temperature (float h, float l): highTemp(h)
lowTemp(l)
{}
//update current temperature readings if temp produces new high or low
void Temperature::UpdateTemp (float temp)
{
if(temp> highTemp)
highTemp=temp;
else if(temp<lowTemp)
lowTemp=temp;
}
//return the high
float Temperature::GetHighTemp (void) const
{
return highTemp;
}
//return the low
float Temperature::GetLowTemp (void) const
{
return lowTemp;
}