vector issues

[Crogn]

Hey guys,

I'm new at c++ and trying to learn it on my own...the code below is being annoying for some reason the last bit where it says

cout << "Would you like to display the vector?";
		cin >> s;
		if (s == "y"){
			for (int j = e.size; j>0; j--){
				cout << e[j];
			}

keeps giving me an error at cout << e[j]; saying <<are undefined...I know it has to do with my vector object e but I dont know what it is....halp

#include"employee.h"
#include"Engineer.h"
#include<vector>


int main(){
	string s;
	int v;
	vector<employee> e;
	cout << "Would you like to add an employee? ";
	cin >> s;
	if (s == "y"){
		string ans;     //Answer For which employee
		
		cout << "Choose wisely my son:   " << endl << "a) Engineer    b) researcher" << endl;
		cin >> ans;
		if (ans == "a"){ 
			cout << "You have choosen an engineer";
			engineer eng;
			cout << "How many days off does he get?";
			cin >> v;
			eng.SetVdays(v);
			cout << "Does the engineer know Cpp?   y or n";
			cin >> s;
			if (s == "y"){ eng.engineercpp(); }
			else { cout << "He doesnt know cpp"; }
			
			for (int i = 0; i < 100; i++){
				e.push_back(eng);
			}

		}
		if (ans == "b"){ 
			cout << "You have choosen a reseacher";

		}
		else{ cout << "its a or b bro"; return main(); } //try to go back to the question instead..but later
	
	
		cout << "Would you like to display the vector?";
		cin >> s;
		if (s == "y"){
			for (int j = e.size; j>0; j--){
				cout << e[j];
			}

	}

}

[liuyang]

The cout does not know how to print an employee, you have to provide your own << method.

See the following code for an example:

ostream& operator << (ostream &s, const employee &e)
{
    s << e.name << e.id;  // something like that
    return s;
}

And then you could use cout to print your employee object.

[Crogn]

Thank you, how would the for loop know to print say the first object in the vector as opposed to the second or 3rd?