How to validate numeric input C++

Question

I\'d like to know how to limit an input value to signed decimals using std::cin.

Answer 1

If the backing variable of the cin is a number, and the string provided is not a number, the return value is false, so you need a loop:

int someVal;

while(!(cin >> someVal)) {
   cin.reset();
   cout << "Invalid value, try again.";
}