Mega Code Archive
A vector may allocate more memory than it currently needs
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#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector<char> vectorObject(10);
cout << "Initial size: " << vectorObject.size() << endl;
cout << "Initial capacity: " << vectorObject.capacity();
cout << "\n\n";
vectorObject.push_back('X');
cout << "Size after push_back: " << vectorObject.size() << endl;
cout << "New capacity: " << vectorObject.capacity();
cout << "\n\n";
vectorObject.resize(100);
cout << "Size after resize: " << vectorObject.size() << endl;
cout << "Capacity after resize: " << vectorObject.capacity();
cout << "\n\n";
vectorObject.push_back('Y');
cout << "Size after push_back: " << vectorObject.size() << endl;
cout << "New capacity: " << vectorObject.capacity();
cout << "\n\n";
return 0;
}
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