View Compilation Error

0_0_18681231_15842\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_18681231_15842\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_18681231_15842\Main.java:5: 错误: 需要class, interface或enum
double b;
^
0_0_18681231_15842\Main.java:6: 错误: 需要class, interface或enum
while(scanf("%lf%lf",&a,&b))
^
0_0_18681231_15842\Main.java:9: 错误: 需要class, interface或enum
else
^
0_0_18681231_15842\Main.java:11: 错误: 需要class, interface或enum
return 0;
^
0_0_18681231_15842\Main.java:12: 错误: 需要class, interface或enum
}
^
7 个错误