How to determine if a string is a number with C++?

Question

I\'ve had quite a bit of trouble trying to write a function that checks if a string is a number. For a game I am writing I just need to check if a line from the file I am r

Answer 1

After consulting the documentation a bit more, I came up with an answer that supports my needs, but probably won't be as helpful for others. Here it is (without the annoying return true and return false statements :-) )

bool isNumber(string line) 
{
    return (atoi(line.c_str())); 
}