0_0_15248501_31603\Main.java:1: 错误: 非法字符: '#'
#include<iostream>
^
0_0_15248501_31603\Main.java:1: 错误: 需要class, interface或enum
#include<iostream>
^
0_0_15248501_31603\Main.java:2: 错误: 非法字符: '#'
#include<cmath>
^
0_0_15248501_31603\Main.java:3: 错误: 非法字符: '#'
#include<iomanip>
^
0_0_15248501_31603\Main.java:5: 错误: 非法字符: '#'
#define pi 3.14159
^
0_0_15248501_31603\Main.java:5: 错误: 需要class, interface或enum
#define pi 3.14159
^
0_0_15248501_31603\Main.java:9: 错误: 需要class, interface或enum
double x1,y1,x2,y2,ans;
^
0_0_15248501_31603\Main.java:10: 错误: 需要class, interface或enum
cin>>t;
^
0_0_15248501_31603\Main.java:11: 错误: 需要class, interface或enum
while(t--)
^
0_0_15248501_31603\Main.java:14: 错误: 需要class, interface或enum
ans=(x1*x2+y1*y2)/(sqrt(x1*x1+y1*y1)*sqrt(x2*x2+y2*y2));
^
0_0_15248501_31603\Main.java:15: 错误: 需要class, interface或enum
ans=180/pi*acos(ans);
^
0_0_15248501_31603\Main.java:16: 错误: 需要class, interface或enum
cout<<fixed<<setprecision(2)<<ans<<endl;
^
0_0_15248501_31603\Main.java:17: 错误: 需要class, interface或enum
}
^
13 个错误
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