0_0_28521069_12901\Main.java:1: 错误: 非法字符: '#'
#include <cstdio>
^
0_0_28521069_12901\Main.java:1: 错误: 需要class, interface或enum
#include <cstdio>
^
0_0_28521069_12901\Main.java:2: 错误: 非法字符: '#'
#include <cmath>
^
0_0_28521069_12901\Main.java:4: 错误: 非法字符: '#'
#define PI acos(-1.0)
^
0_0_28521069_12901\Main.java:4: 错误: 需要class, interface或enum
#define PI acos(-1.0)
^
0_0_28521069_12901\Main.java:7: 错误: 需要class, interface或enum
double y1,y2,y3;
^
0_0_28521069_12901\Main.java:8: 错误: 需要class, interface或enum
double a,b,c,s,p,r;
^
0_0_28521069_12901\Main.java:9: 错误: 需要class, interface或enum
while(scanf("%lf %lf %lf %lf %lf %lf",&x1,&y1,&x2,&y2,&x3,&y3)==6){
^
0_0_28521069_12901\Main.java:11: 错误: 需要class, interface或enum
b = sqrt((x1-x3)*(x1-x3)+(y1-y3)*(y1-y3));
^
0_0_28521069_12901\Main.java:12: 错误: 需要class, interface或enum
c = sqrt((x3-x2)*(x3-x2)+(y3-y2)*(y3-y2));
^
0_0_28521069_12901\Main.java:14: 错误: 需要class, interface或enum
p = (a+b+c)*0.5;
^
0_0_28521069_12901\Main.java:15: 错误: 需要class, interface或enum
s = sqrt(p*(p-a)*(p-b)*(p-c));
^
0_0_28521069_12901\Main.java:16: 错误: 需要class, interface或enum
r = (a*b*c)/(s*4.0);
^
0_0_28521069_12901\Main.java:18: 错误: 需要class, interface或enum
printf("%.2lf\n",PI*r*2.0);
^
0_0_28521069_12901\Main.java:19: 错误: 需要class, interface或enum
}
^
0_0_28521069_12901\Main.java:21: 错误: 需要class, interface或enum
}
^
16 个错误
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