exercise 9.5.1(a)

e_951a.cpp

#include <iostream>
#include <vector>
#include <string>

int main ()
{
    const size_t sz = 2;
    char c_str[] = {'2', '3'};
    
    std::vector <char> c;
    
    for (unsigned i = 0; i != sz; ++i) {
        c.push_back (*(c_str + i));
    }
    
    std::string str(c.begin(), c.end());
    std::cout << str << std::endl;

    return 0;
    
}