hustOJ SPJ（special judge）模板

#include <stdio.h>
#include <math.h>
#define PI acos(-1.0)
#define AC 0
#define WA 1
int main(int argc,char *args[])
{
    FILE * f_in=fopen(args[1],"r");
    FILE * f_out=fopen(args[2],"r");
    FILE * f_user=fopen(args[3],"r");
    int ret=AC;
/**************自己写判题逻辑**************/
    double a,b,c,ans1,ans2;
    fscanf(f_in,"%lf",&a);
    ans2=2.0*PI*a;
    ans1=PI*a*a;
    fscanf(f_user,"%lf%lf",&b,&c);
    if (fabs(ans1-b)<0.0001 && fabs(ans2-c)>0.0001) ret=WA;
/************************************/
    fclose(f_in);
    fclose(f_out);
    fclose(f_user);
    return ret;
}