CODEWITHSUNDEEP
c++stl
Rrobinvip
Rrobinvip

Reputation: 119

How to iterate through a list of the pointers of objects in C++

I'm learning how to use C++ STL and algorithms. Currently, I want to iterate a list of the pointer of objects. This is my approach so far:

for (list<Course*>::iterator it = this->course_list.begin(); 
        it != this->course_list.end(); ++it){
            cout<<it->course_code<<endl;
}

this is a method inside a class, course_list is a member of it and it's a list of the pointer of another class called Course. By doing this, I think "it" now is the pointer to each Course object in the list. course_code is a member of the class Course.

I tried

it.course_code;

or

it->course_code;

both didn't work.

How do I access the course_code with "it"?

Thanks for help.

Upvotes: 0

Views: 1396

Answers (1)

Abhi
Abhi

Reputation: 86

So the iterator functions as a pointer to the underlying data. Meaning lets say I had a vector of integers like below

vector<int> test = {1, 2, 3, 4, 5};
for(auto it = test.begin(); it != test.end()l ++it){
    cout << *it << endl;
}

This will do what you desire, you basically need to dereference the iterator to get to the underlying data. So in your case to access the course_code replace

cout<<it->course_code<<endl;

With

cout<<*it<< endl;

Upvotes: 1

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