有道题写出来感觉上没问题，可就是出错不知道为什么


#include <stdio.h>
main()
{int x,y;
scanf("%d",&x);
if(x<1) y=x;
if(x>=1&&x<10) y=2x-11;
if(x>=10) y=3x-11;
printf("%d\n",y);}
[解决办法]

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

#include <stdio.h>
main()
{
    int x,y;
    scanf("%d",&x);

    if(x < 1) 
      y = x;

    if(x >= 1 && x < 10) 
      y = 2 * x-11; //*

    if(x >= 10) 
       y = 3 * x-11;//*

    printf("%d\n", y);
}