Expected type got Element c++ - c++

Question

Im trying to make a object / type that consists of an element of the periodic table. But when i try to use a vector of that object as a parameter, i get this error message expected a type, got ‘Element’
here is my code so far:
#include <iostream>
#include <string>
#include <vector>
using namespace std;
Element(int AtomicNumm, string Symboll, string Namee, double Weightt,
int Neutronss, int Protonss, string ElectronConfigg) {
string Name = Namee;
int AtomicNum = AtomicNumm;
string Symbol = Symboll;
double Weight = Weightt;
int Neutrons = Neutronss;
int Protons = Protonss;
string ElectronConfig = ElectronConfigg;
}
string returnElement(vector<Element> vec, string input) { // error here
if (input.size() == 2) {
for (int i = 0; i < vec.length(); i++) {
}
}
return "";
}
int main(int argc, char*argv[]) {
vector<Element> PT;
string userinput (argv[1]);
return -1;
}
Also, im new to c++. If objects work completely differently here please let me know. (Coming from java)

Answer 1

That's because you haven't declared 'Element' in your program. Syntactically, it is close to definition of a constructor.
To make your program work, i guess you can do following modification to existing element:
class Element {
// your definition of element Here:
// also include default constructor without any implementation
Element() {}
};