View Compilation Error

0_0_25759684_25738\Main.java:1: 错误: 非法字符: '#'
#include"stdio.h"
^
0_0_25759684_25738\Main.java:1: 错误: 需要class, interface或enum
#include"stdio.h"
        ^
0_0_25759684_25738\Main.java:2: 错误: 非法字符: '#'
#include"math.h"
^
0_0_25759684_25738\Main.java:5: 错误: 需要class, interface或enum
	while (scanf("%lf %lf %lf %lf", &a, &b, &c, &d) != EOF)
	^
0_0_25759684_25738\Main.java:8: 错误: 需要class, interface或enum
		x=(a-c)*(a-c);
		^
0_0_25759684_25738\Main.java:9: 错误: 需要class, interface或enum
		y=(b-d)*(b-d);
		^
0_0_25759684_25738\Main.java:10: 错误: 需要class, interface或enum
		printf("%.2f\n",sqrt(x+y));
		^
0_0_25759684_25738\Main.java:11: 错误: 需要class, interface或enum
	}
	^
0_0_25759684_25738\Main.java:13: 错误: 需要class, interface或enum
}
^
9 个错误