Define the following three classes which represent three different employees Class Names Publicly Data Members Member Function Person hase first stond Worker derived Personalary, training Jan Salary Engineerived Worker print.indalory.pl Training Degree Sel $300$ a firstName, lastName, training, and degree are variables of type string. Salary is a variable of type integer. The salary is incremented according to the following table Diplome Salary Salary $200$ Civil Carpentering $300$ Tlectrical $3300$ Electrician $300$ Compute: $2000$ Designer $350$ The function prins$()$ only prints the salary. Additional member functions can be added as needed Declare a member function prin$()$ of the base class Person as a virtual function. Make the base class Person an abstract base class by declaring a member function findSalary$()$ a pure virtual function. The following driver produces the given sample of output: int main worker one$("$Ali$",$ "Omar", "Electrician"$)$; engineer two$("$Ali$",$ "Omar", "Electrician", "Electrical"$)$; person $*$ptrPersonOne$,*$ptr Person Two; ptrPersonOne &one; ptrPerson Two $=$ &two: ptrPersonOne $->$ findSalaryo: ptrPersonTwo$->$ findSalary: ptrPersonOne $->$print$($: cout