View Compilation Error

0_0_35241239_3521\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_35241239_3521\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_35241239_3521\Main.java:5: 错误: 需要class, interface或enum
while(scanf("%lf %lf %lf %lf",&x1,&x2,&y1,&y2)==4){
^
0_0_35241239_3521\Main.java:7: 错误: 需要class, interface或enum
dist = sqrt(pow(x1-x2),2)+pow(y1-y2),2));
^
0_0_35241239_3521\Main.java:8: 错误: 需要class, interface或enum
printf("%.2f\n",dist);
^
0_0_35241239_3521\Main.java:9: 错误: 需要class, interface或enum
}
^
0_0_35241239_3521\Main.java:11: 错误: 需要class, interface或enum
}
^
7 个错误