[C++] convertire stringhe in numeri

[antotan]

Per convertire una stringa in un numero, in C++, usa gli stringstream:

#include <iostream>
#include <sstream>
#include <string>

using namespace std;

template <typename T>
T parse(string str)
{
    stringstream ss;
    T t;
    
    ss << str;
    ss >> t;
    
    return t;
}

int main()
{
    int x;
    double y;
    int z;
    
    x = parse<int>("-144");
    y = parse<double>("-87.98");
    z = parse<int>("12312");
    
    cout << x << endl;
    cout << y << endl;
    cout << z << endl;

    return 0;
}