Compile Error
/in/circle.cpp:5:5: error: prototype for 'int Circle::isIntersect(Circle*)' does not match any in class 'Circle'
int Circle::isIntersect(Circle *c){
^~~~~~
In file included from /in/circle.cpp:3:0:
/in/compile/circle.h:17:9: error: candidate is: int Circle::isIntersect(Circle&)
int isIntersect(Circle &c);
^~~~~~~~~~~
