View Compilation Error

0_0_6351683_25254\Main.java:1: illegal character: \35
#include"stdafx.h"
^
0_0_6351683_25254\Main.java:2: illegal character: \35
#include <stdio.h>
^
0_0_6351683_25254\Main.java:3: illegal character: \35
#include <math.h>
^
0_0_6351683_25254\Main.java:7: class, interface, or enum expected
    while(scanf("%lf%lf%lf%lf",a,b,a+1,b+1)!=EOF)
    ^
0_0_6351683_25254\Main.java:11: class, interface, or enum expected
        printf("%.2f\n",l);
        ^
0_0_6351683_25254\Main.java:12: class, interface, or enum expected
    }
    ^
0_0_6351683_25254\Main.java:14: class, interface, or enum expected
}
^
7 errors