Question

what can i use instead of "cin" when getting input for "char" in c++?

Answer 1

char ch;
cin.get(ch);
cout << "enter " << ch << endl;

Answer 2

What is wrong with std::cin?

If you want to use the C library, you can use that instead. Look at scanf().

E.g.:

#include <cstdio>

int main()
{
    char ch;
    std::scanf("%c", &ch);
    return 0;
}