#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    float number1 {0.1};
    float number2 {0.5};

    streamsize oldPrecision {cout.precision()};

    cout << "number1 = " << number1 << endl;
    cout << "number2 = " << number2 << endl;

    cout << endl << endl;

    cout << "After call to set precision " << endl;
    cout << fixed << setprecision(15) ;
    cout << "number1 = " << number1 << endl;
    cout << "number2 = " << number2 << endl;
    cout << "number1 = " << number1 << endl;

    cout << endl << endl;
    cout << "After restoring the precision " << endl;
    cout.precision(oldPrecision);
    cout << defaultfloat;
    // cout << setprecision(oldPrecision);
    cout << "number1 = " << number1 << endl;
    cout << "number2 = " << number2 << endl;


    return 0;
}