Data commit

Task/Address-of-a-variable/Go/address-of-a-variable.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"unsafe"
+)
+
+func main() {
+	myVar := 3.14
+	myPointer := &myVar
+	fmt.Println("Address:", myPointer, &myVar)
+	fmt.Printf("Address: %p %p\n", myPointer, &myVar)
+
+	var addr64 int64
+	var addr32 int32
+	ptr := unsafe.Pointer(myPointer)
+	if unsafe.Sizeof(ptr) <= unsafe.Sizeof(addr64) {
+		addr64 = int64(uintptr(ptr))
+		fmt.Printf("Pointer stored in   int64: %#016x\n", addr64)
+	}
+	if unsafe.Sizeof(ptr) <= unsafe.Sizeof(addr32) {
+		// Only runs on architectures where a pointer is <= 32 bits
+		addr32 = int32(uintptr(ptr))
+		fmt.Printf("Pointer stored in   int32: %#08x\n", addr32)
+	}
+	addr := uintptr(ptr)
+	fmt.Printf("Pointer stored in uintptr: %#08x\n", addr)
+
+	fmt.Println("value as float:", myVar)
+	i := (*int32)(unsafe.Pointer(&myVar))
+	fmt.Printf("value as int32: %#08x\n", *i)
+}