View Compilation Error

0_0_16132863_1791\Main.java:1: 错误: 非法字符: '#'
#include<stdio.h>
^
0_0_16132863_1791\Main.java:1: 错误: 需要class, interface或enum
#include<stdio.h>
        ^
0_0_16132863_1791\Main.java:2: 错误: 非法字符: '#'
#include<math.h>
^
0_0_16132863_1791\Main.java:7: 错误: 需要class, interface或enum
    scanf("%d",&t);
    ^
0_0_16132863_1791\Main.java:8: 错误: 需要class, interface或enum
    while(t--)
    ^
0_0_16132863_1791\Main.java:11: 错误: 需要class, interface或enum
        scanf("%d%d",&x,&y);
        ^
0_0_16132863_1791\Main.java:12: 错误: 需要class, interface或enum
        int m=2.0*x*y;
        ^
0_0_16132863_1791\Main.java:13: 错误: 需要class, interface或enum
        printf("%d\n",m);
        ^
0_0_16132863_1791\Main.java:14: 错误: 需要class, interface或enum
    }
    ^
0_0_16132863_1791\Main.java:16: 错误: 需要class, interface或enum
}
^
10 个错误