#include <iostream>
#include <iomanip>
using namespace std;
int main(void) {
float x,y;
x= 2.3;
y=2.123456;
cout <<x;
cout << setprecision(2)<<x;
cout <<y;
cout << setprecision(2)<<y;
cout << setprecision(0)<<y ;
return 0;
}
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