Remove \r from a string in C++

Question

in a C++ program, there is a point when it reads a string like:

"NONAME_1_1\r"

the \r is causing me trouble. I guess it prints or adds something like "^M". Is it right? Anyway it casues me problem, and I want to get rid of it.

I can not modify the input. I wonder how could I at this point, using C++, and in the easiest way, to remove \r for this string.

I know how to do it on bash but no clue on C++.

Thanks.

Answer 1

I'm assuming that by string, you mean std::string.

If it's only the last character of the string that needs removing you can do:

mystring.pop_back();

mystring.erase(mystring.size() - 1);

Edit: pop_back() is the next version of C++, sorry.

With some checking:

if (!mystring.empty() && mystring[mystring.size() - 1] == '\r')
    mystring.erase(mystring.size() - 1);

If you want to remove all \r, you can use:

mystring.erase( std::remove(mystring.begin(), mystring.end(), '\r'), mystring.end() );