Blue Bridge Cup-Algorithm Training-Sign Function

topic

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Problem description
　　Given a real number x, output the value of sign(x).

sign(x) is a sign function. If x>0, it returns 1; if x=0, it returns 0; if x<0, it returns -1.
Input format
　　one real number x per line.
Output format
　　an integer on a line represents the answer.
Sample input-
0.0001
Sample output
-1
Data scale and convention
　　|x|<=10000, the input data accuracy can reach 4 decimal places at most.
Tips: When
　　judging whether the real number x is equal to zero, due to the computer real number calculation error, a very small amount of eps should be introduced. The core code is as follows:
　　where fabs is the absolute value function in cmath.
　　const double eps=1e-6;

if (fabs(x) <= eps) { 　　//x is zero 　　}

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Code

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