Question

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What is the best way to slurp a file into a std::string in c++?

Im trying to store a whole text file as a string,
how can I dynamically store any amount of characters the text file may contain?

Answer 1

The C++ Standard Library provides the std::string type for dynamically sized strings. It is a typedef for std::basic_string<char>. There’s a useful reference at cppreference.com.

For reading lines from a file into a std::string, take a look at std::getline. You can use it to get a line from a file as follows:

std::string str;
std::getline(file_stream, str);

Be sure to check the stream (it is returned by std::getline) to see if everything went okay. This is often done in a loop:

while (std::getline(file_stream, str)) {
  // Use str
}