Question

class employee                                                                                    //Line 1

{                                                                                                          //Line 2

public:                                                                                     //Line 3

employee();                                                                 //Line 4

employee(string, int, double);                                     //Line 5

employee(int, double);                                                //Line 6

employee(string);                                                        //Line 7

void setData(string, int, double);                                //Line 8

void print() const;                                                       //Line 9

void updateSalary(double x);                         //Line 10

int getNumOfServiceYears() const;               //Line 11

double getSalary() const;                                            //Line 12

private:                                                                                    //Line 13

string name;                                                                //Line 14

int numOfServiceYears;                                             //Line 15

double salary;                                                              //Line 16

};

a. Give the line number containing the constructor that is executed in each of the following declarations:

i. employee tempEmployee;

ii. employee newEmployee("Harry Miller", 0, 25000);

iii. employee oldEmployee("Bill Dunbar", 15, 55000);

b. Write the definition of the constructor in Line 4 so that the instance variables are initialized to " ", 0, and 0.0, respectively.

c. Write the definition of the constructor in Line 5 so that the instance variables are initialized according to the parameters.

d. Write the definition of the constructor in Line 6 so that the instance variable name is initialized to the empty string and the remaining instance variables are initialized according to the parameters.

Answer 1

a. i) Line 4 - employee() - as there are no parameters

ii)Line 5 - employee(string, int, double); - as three parameters are passed in the sequence string,int,double/int

iii)Line 5 - employee(string, int, double); - as three parameters are passed in the sequence string,int,double/int

b. employee() // constructor definition

{

name = " "; //initialize name

numOfServiceYears = 0; // initialize numOfServiceYears

salary = 0.0 ; // initialize salary

}

c.

employee(string str, int years, double sal) // constructor definition

{

name = str; //initialize name

numOfServiceYears = years; // initialize numOfServiceYears

salary = sal ; // initialize salary

}

d.

employee(int years, double sal) //definition of constructor

{

name = ""; //initialize name

numOfServiceYears = years; // initialize numOfServiceYears

salary = sal ; // initialize salary

}