how to convert char value to int in c++ code example

Example 1: char to int c++

int x = (int)character - 48;

Example 2: C++ int to char*

std::string s = std::to_string(number);
char const *pchar = s.c_str();  //use char const* as target type

Example 3: convert char to int c++

int x = character - '0'