1043 分段函数3

#include<iostream>#include<iomanip>#include<math.h>using namespace std;int main(){float x,y;cin>>x;if(x>=0)y=sqrt(x);elsey=(x+1)*(x+1)+2*x+1/x;cout<<setiosflags(ios::fixed)<<setprecision(2)<<y<<endl;return 0;}