c++ proposed exercises (chapter 8: the c++ programing language, fourth edition) - solution -

Chapter 8 Solutions

1. Before giving the code, it is important to mention that arrays in C++ arent assignable. Thats way I will showtwo equivalent implementations.

1 # inc lude 2

3 using std : : cout ;4 using std : : endl ;5

6 s t r u c t Address {7 const char * name ;8 i n t number ;9 const char * street ;

10 const char * town ;11 char state [ 2 ] ;12 const char * zip ;13 } ;14

15 vo id print ( const Address& A ) {16 cout

2. struct with pointer

1 # inc lude 2

3 using std : : cout ;4 using std : : endl ;5

6 s t r u c t Address {7 const char * name ;8 i n t number ;9 const char * street ;

10 const char * town ;11 char state [ 2 ] ;12 const char * zip ;13 } ;14

15 vo id print ( const Address& A ) {16 cout

4, 5 Person struct.

1 # inc lude 2

3 using std : : cout ; using std : : endl ;4

5 s t r u c t Person {6 i n t age ;7 char sex ;8 std : : string name , last_name ;9 } ;

10

11 vo id print ( const Person& A ) {12 cout

27 }

main.cpp

7 Not implemented.

8 The UML with the constructor is:

Person

age: intsex: charname: stringlast name: stringPerson(string,string,int,char):Person

Figure 1: Person class with constructor

1 # inc lude 2

3 using std : : cout ; using std : : endl ;4

5 s t r u c t Person {6 i n t age_ ;7 char sex_ ;8 std : : string name_ , last_name_ ;9 Person ( const std : : string& name , const std : : string& lastname , const char& sex , const i n t &

age ) :name_ (name ) ,last_name_ (lastname ) ,sex_ (sex ) ,age_ (age ) { }10

11 } ;12

13 vo id print ( const Person& A ) {14 cout

1 # inc lude 2

3 using std : : cout ;4 using std : : endl ;5

6 s t r u c t Rectangle {7 const double base ;8 const double height ;9 double area ( ) {

10 r e t u r n (base * height ) ;11 }12 } ;13

14 i n t main ( i n t argc , const char * argv [ ] ) {15 Rectangle R={10 ,2 } ;16 cout

12 Person Struct.It would be better to use plain enum rather than enum class due to print function. Change from enum classto enum and identify that no casting is need it.

1 # inc lude 2

3 using std : : cerr ;4 using std : : cout ;5 using std : : endl ;6

7 enum class sex {male = 0 , female = 1 , gay = 2 , lesbian = 3 , transsexual = 4 } ;8 enum class marital_status {single = 0 , married = 1 , divorced = 2 , widow = 3 } ;9

10 s t r u c t Person {11 std : : string name_ , last_name_ ;12 i n t age_ ;13 sex sex_ ;14 marital_status maritalStatus_ ;15 vo id print ( ) {16 cout