c 2b 2b parse int

1std::string s = "10";
2int i = std::stoi(s);

1#include <iostream>
2#include <string>
3using namespace std;
4int main() {
5 
6    string s = "10";
7 
8    try
9    {
10        int i = stoi(s);
11        cout << i << '\n';
12    }
13    catch (invalid_argument const &e)
14    {
15        cout << "Bad input: std::invalid_argument thrown" << '\n';
16    }
17    catch (out_of_range const &e)
18    {
19        cout << "Integer overflow: std::out_of_range thrown" << '\n';
20    }
21 
22    return 0;
23}

1atoi( str.c_str() )