push all exercices

ch2/1/const_declarations.go

@@ -0,0 +1,10 @@
+package main
+
+import "fmt"
+
+func main() {
+	var i int64 = 20
+	var f float64 = float64(i)
+	fmt.Println(i)
+	fmt.Println(f)
+}

ch2/1/go.mod

@@ -0,0 +1,3 @@
+module ch2
+
+go 1.25.0

ch2/2/ch2_2.go

@@ -0,0 +1,11 @@
+package main
+
+import "fmt"
+
+func main() {
+	const value = 15
+	var i int = value
+	var f float64 = value
+	fmt.Println(i)
+	fmt.Println(f)
+}

ch2/2/go.mod

@@ -0,0 +1,3 @@
+module ch2_2
+
+go 1.25.0

ch2/3/ch3_2.go

@@ -0,0 +1,15 @@
+package main
+
+import "fmt"
+
+func main() {
+	var b byte = 255
+	var smallI int32 = 2147483647
+	var bigI uint64 = 18446744073709551615
+	b += 1
+	smallI += 1
+	bigI += 1
+	fmt.Println(b)
+	fmt.Println(smallI)
+	fmt.Println(bigI)
+}

ch2/3/go.mod

@@ -0,0 +1,3 @@
+module ch2_3
+
+go 1.25.0