这错哪了呢 输出结果一大串

Question

#include"stdio.h"
#include"math.h"
void main()
{
    double x,y;
    printf("请输入x的值:");
    scanf("%f",&x);
    if(x<3)
        y=3*x*x+3*x+7;
    else
        if(x>=6)
        y=sqrt(x+2*sin(3*x));
        else
            y=(pow(((x-4)/(x+5)),3));
    printf("输出y的值：%f",y);

}
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/321034351456151.jpg "#left")

Answer 1

scanf("%f",&x);
修改为
scanf("%lf", &x);