Converting numbers to strings with stringstream

The code is simple, string-to-number and number-to-string are written similarly.

#include <sstream>
#include <bits/stdc++.h>
using namespace std;

intmain ()
{
    double num = 0.123456;
    string s;
    stringstream sstream;

    sstream << num;
    sstream >> s;

    cout << s << endl;

    sstream.clear();

    return 0;
}

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