012_stl_empty.cpp

#include <iostream>
#include <vector>
 
template <class T>
void print(const T& container)
{
    if ( std::empty(container) )
    {
        std::cout << "Empty\n";
    }
    else
    {
        std::cout << "Elements:";
        for ( const auto& element : container )
            std::cout << ' ' << element;
        std::cout << '\n';
    }
}
 
int main() 
{
    std::vector<int> c = { 1, 2, 3 };
    print(c);
    c.clear();
    print(c);
 
    int array[] = { 4, 5, 6 };
    print(array);
 
    auto il = { 7, 8, 9 };
    print(il);
}