View Compilation Error

0_0_23359654_8836\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_23359654_8836\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_23359654_8836\Main.java:2: 错误: 非法字符: '#'
#include<math.h>
^
0_0_23359654_8836\Main.java:6: 错误: 需要class, interface或enum
	double length;
	^
0_0_23359654_8836\Main.java:7: 错误: 需要class, interface或enum
	while(scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2)!=EOF)
	^
0_0_23359654_8836\Main.java:10: 错误: 需要class, interface或enum
	}
	^
6 个错误