入门C语言求救

#include
#include<族歼渣math.h>
#include
int main()
{
	double *data;
	int i,n;
	scanf("%d",&改慧n);
	data=(double*)malloc(sizeof(double)*n);
	for(i=0;i	{
		scanf("%lf",&兆悄data[i]);
	}
	for(i=0;i	{
		if(data[i]<0)
			printf("y=%lf\n",fabs(data[i])/2);
		else if(data[i]>=0&&data[i]<10)
			printf("y=%lf\n",3+exp(data[i]));
		else if(data[i]<20)
			printf("y=%lf\n",log10(data[i]));
		else if(data[i]<30)
			printf("y=%lf\n",pow(data[i],1.5));
		else if(data[i]<50)
			printf("y=%lf\n",sqrt(data[i])-1);
		else 
			printf("y=%lf\n",3*cos(data[i]));
	}
	free(data);
	data=NULL;
	return 0;
}