How to remove error when i enter number in char input types

Answer 1

cin.clear()
cin.ignore()

https://stackoverflow.com/questions/5131647/why-would-we-call-cin-clear-and-cin-ignore-after-reading-input

Answer 2

Sample:

try
{
std::cin >> stuff;
std::cin.clear(); std::cin.ignore(512, '\n');
}
catch (...)
{
std::cerr << "Invalid input.";
}

Answer 3

can you show me the programme please in which you got the error