Add remaining activities of chapter 01

chapter_01/activity_1.03/main.go

@@ -0,0 +1,18 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  count := 5
+  var message string
+
+  if count > 5 {
+    message = "Greater than 5"
+  } else {
+    message = "Not greater than 5"
+  }
+
+  fmt.Println(message)
+
+}

chapter_01/activity_1.04/main.go

@@ -0,0 +1,16 @@
+package main
+
+import "fmt"
+
+func main() {
+
+  count := 0
+
+  if count < 5 {
+    count = 10
+    count++
+  }
+
+  fmt.Println(count == 11)
+
+}