已知函数输入x值求y

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

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