Have you ever wondered what would be the easiest way to read a whole text file in a string? There are many ways to skin that cat, but here is one I find myself using the following code:
#include <fstream>
#include <string>
int main()
{
std::string str; // Will hold the contents of the file
std::ifstream fileStream("test.txt");
// Figure out how big is the file and reserve space
fileStream.seekg(0, std::ios::end);
str.reserve(fileStream.tellg());
fileStream.seekg(0, std::ios::beg);
// Read it
str.assign((std::istreambuf_iterator<char>(fileStream)), std::istreambuf_iterator<char>());
return 0;
}
Easy and very useful for small text files, but I wouldn’t use it for larger files. You are probably better off reading a line at a time :-).