ch17-4.c

C语言程序设计上机指导与练习 冶金工业出版社 刘怀亮

#include "stdio.h"
main()
{
   int x,y;
   printf("Please input x: ");
   scanf("%d",【 1 】);
   if(x<1)
   {
       y=x;
       printf("x=%d, y=x=%d\n",x,y);
   }
   else if(【 2 】)
   { 
     y=2*x-1;
     printf("x=%d,y=2*x-1=%d\n",x,y);
   }
   else
   {   y=【 3 】;
       printf("x=%d,y=3*x-11=%d\n",x,y);
   }
}