編譯原理英文課件：SemanticAssignment

1、Answer to AssignmentsAssignment(1)please write down internal representation of following types? typedef struct char name10; int age; person; typedef person List10; typedef union int data; real length; char name4;Test; Internal representation of Struct/UnionSize Kind BodystructTy/unionTy Body: 指向聯(lián)合體中

2、域定義鏈表指向聯(lián)合體中域定義鏈表 Size: 所有域的類型的所有域的類型的sizesize中最大值中最大值; ;BodyFieldTypeOffsetFieldNameNexttypedef struct char name10; int age; person;Size Kind BodystructTyintPtrnilage010arrayKind09charPtr10personPtr11nametypedef person List10;110arrayKind09personPtrListPtrtypedef union int data; real length; char na

3、me4;Size Kind BodyunionTyintPtr0TestPtrrealPtr00nil4arrayKind03charPtr4datelengthnameAssignment(2) Please write down the content of the symbol table at following point 1- 4? (localized symbol table and globalized symbol table) typedef struct char name30; int age; Student; Student Lee; int i ; int Ge

4、tAge(Student S) return S.age; void SetAge( int i) Lee.age=i; void main() student Lee; SetAge(10); int i = 20; Lee.age = i;1234Localized Symbol table at Scope棧棧031structTyintPtrnilage030arrayKind029charPtr30student typeKindnameLocalized Symbol table at 0studenttypeKindScope棧棧LeevarKind00diriintPtrvar

5、Kind031dirGetAgeintPtr routeKind0pPtr1SvarKind10dirstudentPtrLocalized Symbol table at 0studenttypeKindScope棧棧LeevarKind00dirivarKind031dirSetAgevoidrouteKind0pPtr1ivarKind10dirstudentPtrintPtrGetAgeintPtr routeKind0pPtrintPtrLocalized Symbol table at 0studenttypeKindScope棧棧LeevarKind00dirivarKind03

6、1dirmainvoidrouteKind0pPtr1leevarKind10dirstudentPtrivarKind131dirintPtrSetAgevoidrouteKind0pPtrGetAgeintPtr routeKind0pPtrintPtrExercise Please write down (level,offset) at different blue points of following program. If at point 0 it is (L, Off). typedef struct char name30; int age; Student; Student Lee; int i ; int GetAge(Student S) return S.age; void SetAge( int i) Lee.age=i; void main() student Lee; SetAge(10); int i = 20; Lee.age = i; int j = 30; Lee.age = i; 123456789101112130position