how to get first and last letter of a string c++ code example

Example 1: get first and last character of string c++

auto first_char = str.front()
auto last_char = str.back()

Example 2: c++ first letter of string

// string::at
#include <iostream>
#include <string>

int main ()
{
  std::string str ("Test string");
  for (unsigned i=0; i<str.length(); ++i)
  {
    std::cout << str.at(i);
  }
  return 0;
}