编辑代码

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