1. CS 1430: Programming in C++

2. Enumeration Data Type enum Day {SUN, MON, TUE, WED, THU, FRI, SAT};
Day today;
today = MON;
if (today == FRI)
cout << "We have a quiz or a test!";
else if (today == THU)
cout << “We have a Lab!";
else if (today == SAT)
cout << “Party!";
else
cout << “What to do?”;

3. Enumeration Data Type and const int
enum Day {SUN, MON, TUE, WED, THU, FRI, SAT};
Day today;
today = WED;
if (today == FRI) …
const int SUN = 0;
const int MON = 1;
const int TUE = 2;
const int WED = 3;
const int THU = 4;
const int FRI = 5;
const int SAT = 6;
int today;
today = 10;

4. Enumeration Data Type Operations on enum type assignment comparison
Function return value
Function parameters: &
No Input/Output!

5. Enumeration Data Type enum Status {FRESHMAN, SOPHOMORE, JUNIOR,
SENIOR};
enum Status {FRESHMAN = 1, SOPHOMORE, JUNIOR,
enum Status {SENIOR = 4, JUNIOR = 3,
FRESHMAN = 1, SOPHOMORE = 2};
enum Status {JUNIOR = 3, SENIOR,
FRESHMAN = 1, SOPHOMORE};

6. Using enum Type in C++ Classes
enum Status {FRESHMAN, SOPHOMORE, JUNIOR, SENIOR};
class StudentType {
private:
string id;
string firstName, lastName;
float gpa;
Status standing;
public:
. . . };

7. Method Read of Class StudentType
void Read() {
cin >> id >> firstName >> lastName >> gpa;
int credits;
cin >> credits;
if (credits <= 30)
standing = FRESHMAN;
else if (credits <= 60)
standing = SOPHOMORE;
else if (credits <= 90)
standing = JUNIOR;
else
standing = SENIOR;
return; }

8. Private Method Status ReadStanding() { int credits;
cin >> credits;
if (credits <= 30)
return FRESHMAN;
else if (credits <= 60)
return = SOPHOMORE;
else if (credits <= 90)
return = JUNIOR;
else
return = SENIOR; }

9. Method Read of Class StudentType
void Read() {
cin >> id >> firstName >> lastName >> gpa;
standing = ReadStanding();
return; }

10. Method GetStandig
class StudentType { private: public: Status GetStanding() const return standing; } };

11. Method Write of Class StudentType
void Write() const {
cout << endl << setw(25) << id
<< endl << setw(25) << firstName
<< endl << setw(25) << lastName
<< endl << setw(25) << gpa
<< endl << setw(25) << GetStanding();
return; }
// Correct?
// No!
// No input/output on enum types!

12. Method Write of Class StudentType
void Write() const {
cout << endl << setw(25) << id
<< endl << setw(25) << firstName
<< endl << setw(25) << lastName
<< endl << setw(25) << gpa;
if (standing == FRESHMAN)
cout << endl << setw(25) << “FRESHMAN”;
else if (standing == SOPHOMORE)
cout << endl << setw(25) << “SOPHOMORE”;
else if (standing == JUNIOR)
cout << endl << setw(25) << “JUNIOR”;
else
cout << endl << setw(25) << “SENIOR”;
return; }

13. Private Method void DisplayStanding() const {
if (standing == FRESHMAN)
cout << endl << setw(25) << “FRESHMAN”;
else if (standing == SOPHOMORE)
cout << endl << setw(25) << “SOPHOMORE”;
else if (standing == JUNIOR)
cout << endl << setw(25) << “JUNIOR”;
else
cout << endl << setw(25) << “SENIOR”;
return; }

14. Method Write of Class StudentType
void Write() const {
cout << endl << setw(25) << id
<< endl << setw(25) << firstName
<< endl << setw(25) << lastName
<< endl << setw(25) << gpa;
DisplayStanding();
return; }

15. Private Method string Standing() const { string s;
if (standing == FRESHMAN)
s = “FRESHMAN”;
else if (standing == SOPHOMORE)
s = “SOPHOMORE”;
else if (standing == JUNIOR)
s = “JUNIOR”;
else
s = “SENIOR”;
return s; }

16. Method Write of Class StudentType
void Write() const {
cout << endl << setw(25) << id
<< endl << setw(25) << firstName
<< endl << setw(25) << lastName
<< endl << setw(25) << gpa;
<< endl << setw(25) << Standing();
return; }

17. enum Status {FRESHMAN, SOPHOMORE, JUNIOR, SENIOR};
class StudentType {
private:
string id, firstName, lastName;
float gpa;
Status standing;
Status ReadStanding()
string Standing()
public:
StudentType()
StudentType(string sid, string first, string last, float sgpa)
StudentType(const StudentType& s)
void Read()
void Write() const
Status GetStanding() const
bool Equals(const StudentType& s) const
// if (s1.Equals(s2))
. . . };

18. Class SectionType const int MAX_SIZE = 30;
enum Status {FRESHMAN, SOPHOMORE, JUNIOR, SENIOR};
class StudentType {
. . . };
class SectionType
private:
int numStudents;
StudentType students[MAX_SIZE];
public:
void Read()

19. Class SectionType const int MAX_SIZE = 26;
enum Status {FRESHMAN, SOPHOMORE, JUNIOR, SENIOR};
class StudentType
class SectionType {
private:
int numStudents;
StudentType students[MAX_SIZE];
public:
void Read()
cin >> numStudents;
for (int i = 0; i < numStudents; i ++)
students[i].Read(); }
. . . };

20. const int MAX_SIZE = 26;
enum Status {FRESHMAN, SOPHOMORE, JUNIOR, SENIOR};
class StudentType
class SectionType
int main() {
SectionType CS143_S2;
CS143_S2.Read();
// Find the freshman student with the highest GPA among
// all freshman students in CS143_S2 }

21. class SectionType {
private:
int numStudents;
StudentType students[MAX_SIZE];
. . .
public:
StudentType FreshmanStudentOfMaxGPA() const
int index;
float maxGPA = 0.0;
for (int i = 0; i < numStudents; i ++)
if (students[i].GetStanding() == FRESHMAN)
float gpa = students[i].GetGPA();
if (gpa >= maxGPA)
index = i;
maxGPA = gpa; }
return students[index]; // assuming at least one freshman };

22. const int MAX_SIZE = 26;
enum Status {FRESHMAN, SOPHOMORE, JUNIOR, SENIOR};
class StudentType
class SectionType
int main() {
SectionType CS143_S2;
CS143_S2.Read();
StudentType s = CS143_S2.FreshmanStudentOfMaxGPA();
cout << “The Freshman student with highest GPA ”
<< “ among all freshman students in Section 2 of CS143: ”;
s.Write();
. . . }

23. Schedule
Lab 9
Lab 10
Program 5
Group Assignment

24. Helper Lab Assistants Lab Pals Extra Helper: Zach Gerner
6 PM – 8 PM, Mon - Thu
Lab Pals
9 AM – 3 PM, Thu
Extra Helper: Zach Gerner
4 PM – 6 PM, Tuesday