Mega Code Archive
Vector Creation and Element Access
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#include <iostream>
#include <string>
#include <vector>
using namespace std;
class Employee
{
public:
Employee();
Employee(const string& name, const int age);
Employee(const Employee& rhs);
~Employee();
void SetName(const string& name);
string GetName() const;
void SetAge(const int age);
int GetAge() const;
Employee& operator=(const Employee& rhs);
private:
string itsName;
int itsAge;
};
Employee::Employee()
: itsName("New Employee"), itsAge(16)
{}
Employee::Employee(const string& name, const int age)
: itsName(name), itsAge(age)
{}
Employee::Employee(const Employee& rhs)
: itsName(rhs.GetName()), itsAge(rhs.GetAge())
{}
Employee::~Employee()
{}
void Employee::SetName(const string& name)
{
itsName = name;
}
string Employee::GetName() const
{
return itsName;
}
void Employee::SetAge(const int age)
{
itsAge = age;
}
int Employee::GetAge() const
{
return itsAge;
}
Employee& Employee::operator=(const Employee& rhs)
{
itsName = rhs.GetName();
itsAge = rhs.GetAge();
return *this;
}
ostream& operator<<(ostream& os, const Employee& rhs)
{
os << rhs.GetName() << " is " << rhs.GetAge() << " years old";
return os;
}
template<class T>
void ShowVector(const vector<T>& v); // display vector properties
typedef vector<Employee> SchoolClass;
int main()
{
Employee Harry;
Employee Sally("Sally", 15);
Employee Bill("Bill", 17);
Employee Peter("Peter", 16);
SchoolClass EmptyClass;
cout << "EmptyClass:\n";
ShowVector(EmptyClass);
SchoolClass GrowingClass(3);
cout << "GrowingClass(3):\n";
ShowVector(GrowingClass);
GrowingClass[0] = Harry;
GrowingClass[1] = Sally;
GrowingClass[2] = Bill;
cout << "GrowingClass(3) after assigning students:\n";
ShowVector(GrowingClass);
GrowingClass.push_back(Peter);
cout << "GrowingClass() after added 4th student:\n";
ShowVector(GrowingClass);
GrowingClass[0].SetName("Harry");
GrowingClass[0].SetAge(18);
cout << "GrowingClass() after Set\n:";
ShowVector(GrowingClass);
return 0;
}
template<class T>
void ShowVector(const vector<T>& v)
{
cout << "max_size() = " << v.max_size();
cout << "\tsize() = " << v.size();
cout << "\tcapacity() = " << v.capacity();
cout << "\t" << (v.empty()? "empty": "not empty");
cout << "\n";
for (int i = 0; i < v.size(); ++i)
cout << v[i] << "\n";
cout << endl;
}
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