Eroare de compilare: user.cpp:14: error: new types may not be defined in a return type user.cpp:14: note: (perhaps a semicolon is missing after the definition of 'circle') user.cpp:14: error: two or more data types in declaration of 'is_collinear' user.cpp: In function 'int cmp(circle, circle)': user.cpp:20: error: 'is_collinear' was not declared in this scope user.cpp: In function 'int circle_intersect(circle, circle)': user.cpp:33: error: 'struct circle' has no member named 'r' user.cpp:33: error: 'struct circle' has no member named 'r' user.cpp:33: error: 'struct circle' has no member named 'r' user.cpp:33: error: 'struct circle' has no member named 'r' user.cpp: In function 'int main()': user.cpp:45: error: 'struct circle' has no member named 'r' user.cpp:50: error: 'is_collinear' was not declared in this scope user.cpp:55: error: 'TopMAx' was not declared in this scope