Go指针类型对所指对象的解释方式 章丘市教育局

### 1.以int64型指针的解释方式向n赋值: “`go func main() { var n int64 = 5 var pn = &n var pf = (*float64)(unsafe.Pointer(pn)) fmt.Println(reflect.TypeOf(n)) fmt.Println(reflect.TypeOf(pf)) fmt.Println(reflect.TypeOf(pn)) *pn = 100 fmt.Println(n) fmt.Println(*pn) fmt.Println(*pf) } “` #### output: “` go int64 *float64 *int64 100 100 4.94e-322 “` ### 2.以float64型指针的解释方式向n赋值 “`go func main() { var n int64 = 5 var pn = &n var pf = (*float64)(unsafe.Pointer(pn)) fmt.Println(reflect.TypeOf(n)) fmt.Println(reflect.TypeOf(pf)) fmt.Println(reflect.TypeOf(pn)) *pf = 100 fmt.Println(n) fmt.Println(*pn) fmt.Println(*pf) } “` #### output: “`go int64 *float64 *int64 4636737291354636288 4636737291354636288 100 “`