CODEWITHSUNDEEP
c++classdynamiccreation
LppEdd
LppEdd

Reputation: 21134

Dynamic class creation in C++

I've this little program, and I need to create Class object dynamically. See comments below.

#include <conio.h>

#include "student.h"
#include "teacher.h"

int main() {
  short choose;

  do {

    std::cout << "\n1 - Insert student";
    std::cout << "\n2 - Insert teacher";
    std::cout << "\n3 - Show students";
    std::cout << "\n4 - Show teachers";
    std::cout << "\n5 - Exit";
    std::cout << "\n--> ";
    std::cin  >> choose;

    Student *students;

    switch (choose) {
    case 1 :
      // When user choose option 1, I would like to create
      // a new object "Student", so...
      students = new Student();
      // But if user choose 1 another time, how I create
      // another object "Student" ?
      // Could I do something like this?
      //  students = new Student[student_counter];
      break;
    }

  } while (choose != 5);

  system("pause");
  return 0;
}

Student class has a constructor. Thank you. If something is required just tell me.

Upvotes: 0

Views: 362

Answers (1)

Luchian Grigore
Luchian Grigore

Reputation: 258618

Just use a std::vector<Student>. There's no need for dynamic allocation at all:

std::vector<Student> students;

do {
  switch (choose) {
    case 1 :
      students.push_back(Student());
      break;
  }
}while(...)

If you need to use dynamic allocation, as in it was part of the assignment, just use a std::vector<Student*> and students.push_back(new Student). You'll have to manually free the memory afterwards.

Upvotes: 1

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