View Compilation Error

0_0_24421470_6859\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_24421470_6859\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_24421470_6859\Main.java:2: 错误: 非法字符: '#'
#include<math.h>
^
0_0_24421470_6859\Main.java:7: 错误: 需要class, interface或enum
while(scanf("%d",&t)==1)
^
0_0_24421470_6859\Main.java:12: 错误: 需要class, interface或enum
printf("%lld\n",(long long)(pow(3,n)+0.5));
^
0_0_24421470_6859\Main.java:14: 错误: 需要class, interface或enum
}
^
0_0_24421470_6859\Main.java:17: 错误: 需要class, interface或enum
}
^
7 个错误