convert hex string to integer c++ code example

Example 1: convert stirng to int c++

int thing = std::stoi(string);

Example 2: how to convert from string to int in c++

#include <iostream>
#include <sstream>

using namespace std;

int main() {
    string s = "999";

    stringstream degree(s);

    int x = 0;
    degree >> x;

    cout << "Value of x: " << x;
}