#include <iostream>
#include <sstream>
#include <iomanip>
    
using namespace std;
    
int main()
{
    double a = 157.2734;
    cout << "This number is " << fixed << setprecision(1) << a << "." << endl;
    ostringstream fmtStr;
    fmtStr << "This number is " << fixed << setprecision(1) << a << ".\n";
    string line = fmtStr.str();
    cout << line;
    return 0;
}