error when trying class with linked list c++ - c++

Question

I am trying out simple class and linked list implementation.
Please help me out with this code as i am receiving
"list iterator not dereferencable"
when running the code.
Thanks
#include<iostream>
#include<list>
#include<string>
using namespace std;
class Car
{
public:
void getType(string x)
{
type = x;
}
string showType()
{
return type;
}
private:
string type;
};
void main()
{
string p;
list<Car> c;
list<Car>::iterator curr = c.begin();
cout << "Please key in anything you want: ";
getline(cin, p);
curr->getType(p);
cout << "The phrase you have typed is: " << curr->showType() << endl;
}

Answer 1

Write the following way
cout << "Please key in anything you want: ";
getline(cin, p);
c.push_back( Car() );
list<Car>::iterator curr = c.begin();
curr->getType(p);
And it is much better to rename the member function getType to setType.:)
Take into account that the function main without parameters shall be declared like
int main()
^^^

Answer 2

You didn't insert anything into your list. So the iterator is not valid, it's pointing to c.end() and dereferencing it is undefined behaviour.
Instead add a Car to your list before you get the begin iterator.
#include<iostream>
#include<list>
#include<string>
using namespace std;
class Car
{
public:
void setType(const string& x)
{
type = x;
}
string showType()
{
return type;
}
private:
string type;
};
int main()
{
string p;
list<Car> c;
c.push_back(Car{});
auto curr = c.begin();
cout << "Please key in anything you want: ";
getline(cin, p);
curr->setType(p);
cout << "The phrase you have typed is: " << curr->showType() << endl;
}