编辑代码

#include <stdio.h>
#include<math.h>
int main () {
    float x,y;
    scanf("%f",&x);
    if(x<1)
    y=x;
    if(x>=1&&x<10)
    y=2*x-1;
    if(x>=10)
    y=3*x-11;
    printf("x=%0.2f,y=%0.2f\n",x,y);
    return 0;
}