#include?<stdlib.h>
int?main()?{
double?x;
double?y;
printf("Please?input?x:\n");
scanf("%lf",&x);
printf("Your?input?is:?%g\n",x);
if(x<1)
y=x;
else?if(x>=1&&x<10)
y=2*x-1;
else
y=3*x-11;
printf("The?results?are:?%lf\n",y);
}