How to parse a string to an int in C++?

Question

What\'s the C++ way of parsing a string (given as char *) into an int? Robust and clear error handling is a plus (instead of returning zero).

Answer 1

You could use this defined method.

#define toInt(x) {atoi(x.c_str())};

And if you were to convert from String to an Integer, you would just do the following.

int main()
{
string test = "46", test2 = "56";
int a = toInt(test);
int b = toInt(test2);
cout<

The output would be 102.