C++: Student Record Program - c++

Question

I am in desperate need of help. I am supposed to create a student record using structs and vectors.
In the program, I should have:
For a given student, identified either by name or student number
(a) Enter a new student into the record. (Assume no courses completed.)
(b) Grade point average
(c) Transcript, i.e. a list of courses taken, including credit value and grade earned
(d) Record a newly completed course
A listing, sorted by name, of all students who have taken a given course.
A listing, sorted by grade point average, of all students and their grade point averages,
who are on probation, i.e. have a grade point average < 2.0 .
This is what I have so far... and I seem to be having troubles with the user input how read it into my structs
using namespace std;
struct courses {
string courseName;
int courseNum;
double credit;
char grade;
};
struct students {
string name;
int id;
vector<courses> c;
};
int main() {
// variables
string name;
char selector;
students s;
courses d;
vector<students> student;
vector<courses> course;
// (1) create a menu: (a) user input, (b) echo record (with overall gpa), (c) failed students
do {
// prompt for user input
cout << "Enter Q to (Q)uit, (C)reate new student record, (S)how all record(s) on file, show students on (P)robation: ";
cin >> selector;
selector = toupper(selector);
switch (selector) {
// (a) ask and get for user input:
// student info first
// courses second
case 'C':
// variables within case C
char answer;
char answerAddAnotherCourseEntry;
char answerToAnotherStudentRecord;
do {
cout << "Enter your name and student ID number: ";
cin >> s.name >> s.id;
student.push_back(s);
do {
cout << "Do you want to create a student course entry ('y' or 'n')? ";
cin >> answer;
answer = toupper(answer);
cout << "Enter your course number, course name, grade received and credit worth: ";
cin >> d.courseNum >> d.courseName >> d.grade >> d.credit;
course.push_back(d);
cout << "Add another student course entry ('y' or 'n'): ";
cin >> answerAddAnotherCourseEntry;
answerAddAnotherCourseEntry = toupper(answerAddAnotherCourseEntry);
} while (answer == 'N');
cout << "Add another student record ('y' or 'n'): " << endl;
cin >> answerToAnotherStudentRecord;
answerAddAnotherCourseEntry = toupper(answerToAnotherStudentRecord);
} while (answerToAnotherStudentRecord == 'N');
break;
// (b) echo record of vectors
// sort by name
case 'S':
if (student.empty()) {
cout << "\nSorry, no records exist in the database.";
}
else
for (int count = 0; count < student.size(); count++) { //For Loop to Display All Records
cout << "Student name: " << student[count].name << "ID Number: " << student[count].id << endl;
count++;
// another for loop i think
for (int i = 0; i < course.size(); i++) {
cout << "Course info: " << " " << course[i].courseNum << " " << course[i].courseName << " " << course[i].credit << " " << course[i].grade << endl;
i++;
}
}
cout << endl;
break;
// (c) separate failed student into another vector
// sort by gpa
case 'P':
break;
} // bracket closing switch
} // bracket closing do while
while (selector != 'q' && selector != 'Q'); // first do while

Answer 1

The issues I see with your input is that you are trying to store the user input directly in a string, here e.g. in the variable name of the struct s:
cout << "Enter your name and student ID number: ";
cin >> s.name >> s.id;
This does not compile. Instead you can store the name in a temporary char array first and then copy it to s.name.
char studentName[128];
cout << "Enter your name and student ID number: ";
cin >> studentName >> s.id;
s.name = studentName;
You can also work with getline() if you want to store your input directly in a string.
Furthermore you try to directly output the variable student[count].name, which is a string, to cout:
cout << "Student name: " << student[count].name << "ID Number: " << student[count].id << endl;
Converting the string to a char array first makes this compile:
cout << "Student name: " << student[count].name.c_str() << "ID Number: " << student[count].id << endl;