test

go.mod

@@ -0,0 +1,3 @@
+module hello
+
+go 1.25.4

main.go

@@ -0,0 +1,26 @@
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hello, world")
+	fmt.Println(a, b, PI)
+	arr[3] = 4
+	fmt.Println(arr)
+	fmt.Println(m)
+}
+
+var a int = 10
+var b = 20
+
+// d := 30
+const PI = 3.14
+
+var arr = [4]int{1,2,3}
+
+// var arr = {1,3,4,5}
+var m = map[string]int{
+	"apple": 1,
+	"banana": 2,
+	"cherry": 3,
+}