How can I check whether user input contains digits in C++?
I'm reading the user's choice into a std::string and need to validate it before converting it with std::stoi. The input should be a number, such as 1, 2,…
std::isdigit
How can I check whether user input is a digit in C++?
I'm reading input into a std::string and need to determine whether it contains a digit or another character. The input should represent a playlist choice from 1 through…