Write a full class definition for a class named GasTank, and containing the following members: A data member named amount of type double. A constructor that accepts no parameters. The constructor initializes the data member amount to 0. A function named addGas that accepts a parameter of type double. The value of the amount instance variable is increased by the value of the parameter. A function named useGas that accepts a parameter of type double. The value of the amount data member is decreased by the value of the parameter. A function named getGasLevel that accepts no parameters. getGasLevel returns the value of the amount data member.

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Click on the title for the solution
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This is the answer:

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class GasTank
{
private:
double amount;
public:
GasTank(){amount=0;}
void addGas(double x){amount+=x;}
void useGas(double y){amount-=y;}
double getGasLevel()
{return amount;}
};

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