const char* to integer code example
Example 1: turn a char into an int in c
int x = character - '0';
Example 2: c++ convert const char* to int
#include <iostream>
#include <sstream>
const char* value = "1234567";
stringstream strValue;
strValue << value;
unsigned int intValue;
strValue >> intValue;
cout << value << endl;
cout << intValue << endl;