Add first activities & exercises of chapter 05

chapter_05/activity_5.01/main.go

@@ -0,0 +1,55 @@
+package main
+
+import "fmt"
+
+type Employee struct {
+  Id        int
+  FirstName string
+  LastName  string
+}
+
+type Developer struct {
+  Individual Employee
+  HourlyRate int
+  WorkWeek   [7]int
+}
+
+type Weekday int
+
+const (
+  Sunday Weekday = iota
+  Monday
+  Tuesday
+  Wednesday
+  Thursday
+  Friday
+  Saturday
+)
+
+func main() {
+
+  d := Developer{Individual: Employee{Id: 1, FirstName: "Tony", LastName: "Stark"}, HourlyRate: 10}
+  d.LogHours(Monday, 8)
+  d.LogHours(Tuesday, 10)
+
+  fmt.Println("Hours worked on monday:", d.WorkWeek[Monday])
+  fmt.Println("Hours worked on tuesday:", d.WorkWeek[Tuesday])
+  fmt.Printf("Hours worked this week: %d\n", d.HoursWorked())
+
+}
+
+func (d *Developer) LogHours(day Weekday, hours int) {
+
+  d.WorkWeek[day] = hours
+
+}
+
+func (d *Developer) HoursWorked() int {
+
+  total := 0
+  for _, v := range d.WorkWeek {
+    total += v
+  }
+  return total
+
+}

chapter_05/exercise_5.01/main.go

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+package main
+
+import "fmt"
+
+func main() {
+
+  itemsSold()
+
+}
+
+func itemsSold() {
+
+  items := make(map[string]int)
+  items["John"] = 41
+  items["Celina"] = 109
+  items["Micah"] = 24
+
+  for k, v := range items {
+    fmt.Printf("%s sold %d items and ", k, v)
+    if v < 40 {
+      fmt.Println("is below expectations")
+    } else if v > 40 && v <= 100 {
+      fmt.Println("meets expectations")
+    } else {
+      fmt.Println("exceeded expectations")
+    }
+  }
+
+}

chapter_05/exercise_5.02/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+  "fmt"
+  "strings"
+)
+
+func main() {
+
+  hdr := []string{"empid", "employee", "address", "hours worked",
+    "hourly rate", "manager"}
+  csvHdrCol(hdr)
+  hdr2 := []string{"employee", "empid", "hours worked", "address",
+    "manager", "hourly rate"}
+  csvHdrCol(hdr2)
+
+}
+
+func csvHdrCol(header []string) {
+
+  csvHeadersToColumnIndex := make(map[int]string)
+
+  for i, v := range header {
+    v := strings.TrimSpace(v)
+    switch strings.ToLower(v) {
+    case "employee", "hours worked", "hourly rate":
+      csvHeadersToColumnIndex[i] = v
+    }
+  }
+
+  fmt.Println(csvHeadersToColumnIndex)
+
+}

chapter_05/exercise_5.03/main.go

@@ -0,0 +1,26 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  for i := 1; i <= 15; i++ {
+    n, s := fizzBuzz(i)
+    fmt.Printf("Results: %d %s\n", n, s)
+  }
+
+}
+
+func fizzBuzz(i int) (int, string) {
+
+  switch {
+  case i%15 == 0:
+    return i, "FizzBuzz"
+  case i%3 == 0:
+    return i, "Fizz"
+  case i%5 == 0:
+    return i, "Buzz"
+  }
+  return i, ""
+
+}

chapter_05/fizzBuzz/main.go

@@ -0,0 +1,27 @@
+package main
+
+import "fmt"
+
+func fizzBuzz() {
+
+  for i := 1; i <= 30; i++ {
+    if i%15 == 0 {
+      fmt.Println("FizzBuzz")
+    } else if i%3 == 0 {
+      fmt.Println("Fizz")
+    } else if i%5 == 0 {
+      fmt.Println("Buzz")
+    } else {
+      fmt.Println(i)
+    }
+  }
+
+}
+
+func main() {
+
+  fmt.Println("Main is in control")
+  fizzBuzz()
+  fmt.Println("Back to main")
+
+}