Given the following statements: struct nameType { string first; string last; };

Question

Given the following statements:

struct nameType {
string first;
string last;
};

struct courseType {
string name;
int callNum;
int credits;
char grade;
};

struct studentType {
unsigned queueSlot
nameType name;
double gpa;
courseType course;
};

studentType student;
studentType classList[100];
courseType course;
nameType name;

Mark the following statements as valid or invalid. If a statement is invalid, explain why.

student.course.callNum = "CSC230";
wrong => type of callNum is int. so, we can't assign string to it

cin >> student.name;
wrong => type of student.name is nameType. so, we can't use cin or cout on it

classList[0] = name;
wrong => type of classList[0] is studentType and os name is nameType. since they are of two different structs, we can't use assignment operator

classList[1].gpa = 3.45;
correct

name = classList[15].name;
correct

student.name = name;
correct

cout << classList[10] << endl;
wrong => type of classList[0] is studentType. so, we can't use cin or cout on it

for(int j = 0; j < 100; j++) classList[j].name = name;
correct

Using the declarations from the previous question. Write C++ statements to do the following:

Store the following information in course:

name: Programming I

callNum: 13452

credits: 3

grade: ‘ ‘ [the space character]

In the array classList initialize each queueSlot to the index value of the component inside of classList, and initialize each gpa to 0.0.

Copy the information of the thirty-first component of the array classList into student.

Update the gpa of the tenth student in the array classList by adding 0.75 to its previous value.

Explanation / Answer

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Mark the following statements as valid or invalid. If a statement is invalid, explain why.
student.course.callNum = "CSC230";
wrong => type of callNum is int. so, we can't assign string to it

cin >> student.name;
wrong => type of student.name is nameType. so, we can't use cin or cout on it

classList[0] = name;
wrong => type of classList[0] is studentType and os name is nameType. since they are of two different structs, we can't use assignment operator

classList[1].gpa = 3.45;
correct

name = classList[15].name;
correct

student.name = name;
correct

cout << classList[10] << endl;
wrong => type of classList[0] is studentType. so, we can't use cin or cout on it

for(int j = 0; j < 100; j++) classList[j].name = name;
correct

Using the declarations from the previous question. Write C++ statements to do the following:
Store the following information in course:
name: Programming I
callNum: 13452
credits: 3
grade: ‘ ‘ [the space character]

course.name = "Programming I";
course.callNum = 13452;
course.credits = 3;
course.grade = ' ';

In the array classList initialize each queueSlot to the index value of the component inside of classList, and initialize each gpa to 0.0.
for(int i=0; i<100;i++){
classList[i].queueSlot = i;
gpa = 0.0;
}

Copy the information of the thirty-first component of the array classList into student.
student = classList[31];

Update the gpa of the tenth student in the array classList by adding 0.75 to its previous value.
classList[10].gpa += 0.75

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