Remove last character from C++ string

Question

How can I remove last character from a C++ string?

I tried st = substr(st.length()-1); But it didn\'t work.

Answer 1

With C++11, you don't even need the length/size. As long as the string is not empty, you can do the following:

if (!st.empty())
  st.erase(std::prev(st.end())); // Erase element referred to by iterator one
                                 // before the end