I tried to make an ASCII converter with an if-statement in C++ , but I get a little confused to declare the input variable . this is the main issue .

I try once with the typeid().name() , then typeid() , finally I go with sizeof() function,
here’s what I’ve tried

#include<iostream>
int main()
{
    char character;
    std::cout << "Insert Your Characater: ";
    std::cin >> character;
    if (sizeof(character) == 1)
    {
        std::cout << "Your Character Refers to : " << int(character);
    }
    else if (sizeof(character) == 4)
    {
        std::cout << "nYour Character Refers to :" << char(character);
    }
    else {
        std::cout << "nSomething Went Wrong ... Enter a Number[1,2,3,.....] or an Alphapet[A,a,B,b,C,c,.....] or a Character[(,),-,_,...]";
    }

}

Any suggestion to get this done?