cbegin_begin.cpp

// vector::push_back
#include <iostream>
#include <vector>

int main() 
{
    vector<int> v1;
    
    const vector<int> v2;
    
    
    // begin() function is used to return an iterator pointing to the first element of the vector container.
    auto it1 = v1.begin(), it2 = v2.begin();
    // cbegin will return a const_iterator unconditionally. begin() returns the iterator to beginning while cbegin() returns const_iterator to beginning.
    auto it3 = v1.cbegin(), it4 = v2.cbegin();
}