编辑代码

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