In c++ how to declare variable of a type which can hold either integer or character?

Question

Depending upon users input..

Answer 1

The std::variant type is perfect for such a case. It can hold any one of the types you pass as type paramters
https://en.cppreference.com/w/cpp/utility/variant

Example:
```
std::variant<int, char> v;

v = 10;
// 'v' now holds int

v = 'a';
// 'v' now holds char
```

Answer 2

You can either use unions or a class with a constructor for int and one for char

Answer 3

Maybe you could string input and then try to parse to integer...