/in/foo.cc: In function 'int main()':
/in/foo.cc:30:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(a==0&&b!=0&&c!=0||b==0&&a!=0&&c!=0||c==0&&b!=0&&a!=0)
        ~~~~~~~~~~^~~~~~
/in/foo.cc:30:54: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(a==0&&b!=0&&c!=0||b==0&&a!=0&&c!=0||c==0&&b!=0&&a!=0)
                                            ~~~~~~~~~~^~~~~~
/in/foo.cc:36:18: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(a==0&&c==0&&b!=0||c==0&&b==0&&a!=0||a==0&&b==0&&c!=0)
        ~~~~~~~~~~^~~~~~
/in/foo.cc:36:54: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(a==0&&c==0&&b!=0||c==0&&b==0&&a!=0||a==0&&b==0&&c!=0)
                                            ~~~~~~~~~~^~~~~~