7. Interfaces

Activity 7.01: Calculating Pay and Performance Review

Solution:

1. Create a main.go file.
2. Inside the main.go file, we have a main package and we need to import the errors, fmt, and os packages:

   package main
   import (
     "errors"
     "fmt"
     "os"
   )

3. Create the Employee struct as follows:

   type Employee struct {
     Id        int
     FirstName string
     LastName  string
   }

4. Create the Developer struct. The Developer struct has the Employee struct embedded into it:

   type Developer struct {
     Individual        Employee
     HourlyRate        float64
     HoursWorkedInYear float64
     Review            map[string]interface{}
   }

5. Create the Manager struct; it will have the Employee struct embedded into it as well:

   type Manager struct {
     Individual     Employee
     Salary         float64
     CommissionRate float64
   }

6. The...