View Compilation Error

0_0_28682259_25061.c: In function 'main':
0_0_28682259_25061.c:51:42: error: 'Tag' undeclared (first use in this function)
             if(Point1==-1 && Point2==-1){Tag=1;break;}
                                          ^
0_0_28682259_25061.c:51:42: note: each undeclared identifier is reported only once for each function it appears in