Question

I’m trying to create an object in a function, but I am running into the problem that variable names have to be defined at runtime. Is there something I can do like with arrays that allows ne to dynamically create a variable in a function and preferably give it a different name from the one created when the function was called last?

***I’m working in C++

EDIT: I can’t give any code because I don’t have any right now. All I have right now is pseudo code.

Basically, I’m trying to create a linked list, but the addNewItem() method that I want to use would require using the same method to create different objects.

EDIT: Technically, we’re not making a linklist, just more of a proof of concept to understand how they work.

EDIT: Here’s the code:

#include 'linklist.h' #include <iostream> using namespace std;  struct linklist {     Student * obj;     linklist * next; };  linklist * head;  int main() {  } void addStudent(char * newsdnt) {     if(!head){             linklist * a = new linklist;             a->obj = new Student(newsdnt);             a->next = 0;             head = a;             return;     }else{             linklist * a = new linklist;             a->obj = new Student(newsdnt);             a->next = 0;             if(!head->next){                     head->next = a;  // Can only have one or two items in list             }     } 

}

Answer 1

If you want a linked list – call new to create each new node and then add it to the list.

Smth like this:

void addStudent(char * newsdnt) {     linklist* a = new linklist;     a.obj = new Student(newsdnt);     a.next = 0;      if( head == 0 ) {         head = a;     } else {         linklist* whereToAdd = head;         while( whereToAdd.next != 0 ) {             whereToAdd = whereToAdd.next;         }         whereToAdd.next = a;     } }