How to convert char to int?

Question

C++ / C#

string s = to_string(n);
ll ans = 0;
for (int i = 0; i < s.size(); i++) {
  ans = stoi(s[i]);
}

Works for string, but how to do it for char?

Answer 1

If you need, for example, the symbol of the number 5 to be converted into the number 5, then like this:

char fiveDigit = '5';
int fiveNumber = fiveDigit - '0';