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View Compilation Error

0_0_7782051_4399\Main.java:1: 非法字符: \35
#include<iostream>
^
0_0_7782051_4399\Main.java:2: 非法字符: \35
#include<cstdio>
^
0_0_7782051_4399\Main.java:3: 非法字符: \35
#include<cmath>
^
0_0_7782051_4399\Main.java:6: 需要为 class、interface 或 enum
int main(){
^
0_0_7782051_4399\Main.java:8: 需要为 class、interface 或 enum
    while(scanf("%lf%lf%lf%lf",&x,&y,&l,&w)!=EOF){
    ^
0_0_7782051_4399\Main.java:10: 需要为 class、interface 或 enum
        for(double i=0;i<=atan2(y,x);i+=0.0001){
        ^
0_0_7782051_4399\Main.java:10: 需要为 class、interface 或 enum
        for(double i=0;i<=atan2(y,x);i+=0.0001){
                       ^
0_0_7782051_4399\Main.java:10: 需要为 class、interface 或 enum
        for(double i=0;i<=atan2(y,x);i+=0.0001){
                                     ^
0_0_7782051_4399\Main.java:13: 需要为 class、interface 或 enum
                flag=true;
                ^
0_0_7782051_4399\Main.java:14: 需要为 class、interface 或 enum
                break;
                ^
0_0_7782051_4399\Main.java:15: 需要为 class、interface 或 enum
            }
            ^
0_0_7782051_4399\Main.java:18: 需要为 class、interface 或 enum
    }
    ^
0_0_7782051_4399\Main.java:20: 需要为 class、interface 或 enum
}
^
13 错误


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