0_0_30056915_30280\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_30056915_30280\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
^
0_0_30056915_30280\Main.java:2: 错误: 非法字符: '#'
#include<math.h>
^
0_0_30056915_30280\Main.java:3: 错误: 非法字符: '#'
#define P 3.14159265358979
^
0_0_30056915_30280\Main.java:7: 错误: 需要class, interface或enum
double a,b,c,s,x=0;
^
0_0_30056915_30280\Main.java:8: 错误: 需要class, interface或enum
while(~scanf("%d",&n))
^
0_0_30056915_30280\Main.java:12: 错误: 需要class, interface或enum
s=0;
^
0_0_30056915_30280\Main.java:13: 错误: 需要class, interface或enum
x=(n-2)*180.0/n/2;
^
0_0_30056915_30280\Main.java:14: 错误: 需要class, interface或enum
x=x*P/180;
^
0_0_30056915_30280\Main.java:15: 错误: 需要class, interface或enum
a=sin(x);
^
0_0_30056915_30280\Main.java:16: 错误: 需要class, interface或enum
b=2*cos(x);
^
0_0_30056915_30280\Main.java:17: 错误: 需要class, interface或enum
s=1.0*a*b*(n-1)*0.5;
^
0_0_30056915_30280\Main.java:18: 错误: 需要class, interface或enum
c=b*0.5;
^
0_0_30056915_30280\Main.java:19: 错误: 需要class, interface或enum
s=s+c;
^
0_0_30056915_30280\Main.java:20: 错误: 需要class, interface或enum
printf("%.6lf\n",s);
^
0_0_30056915_30280\Main.java:21: 错误: 需要class, interface或enum
}
^
0_0_30056915_30280\Main.java:23: 错误: 需要class, interface或enum
}
^
17 个错误
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