Example implementation of std::iterator

StdIteratorExample.cpp

#include <iterator> // std::iterator,std::input_iterator_tag
#include <iostream> // std::cout

template <typename T, size_t N>
class SampleVector
{
    T vector[N];
public:   
    class iterator : public std::iterator<std::input_iterator_tag, T>
    {
        T* vector_ptr;
    public:
        iterator(T* vector) : vector_ptr(vector) {}
        iterator& operator++() { ++vector_ptr; return *this;}
        iterator operator++(int) { iterator tmp(*this); operator++(); return tmp; }
        bool operator==(const iterator& rhs) { return vector_ptr == rhs.vector_ptr; }
        bool operator!=(const iterator& rhs) { return vector_ptr != rhs.vector_ptr; }
        int& operator*() {return *vector_ptr;} 
    };
    
    SampleVector() {}
    
    template <typename... Tp> 
    SampleVector(Tp... vec): vector{vec...} {}
    
    iterator begin()
    {
        return iterator(vector);
    }
    
    iterator end()
    {
        return iterator(vector+N);
    }
};

SampleVector<int, 5> vector(80, 40, 30, 45, 50);

int main()
{      
    for (int value: vector)
        std::cout << value << std::endl;
}