Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:24:29: error: ‘cmp’ was not declared in this scope sort (v + 1, v + m + 1, cmp); ^ user.cpp:24:32: error: ‘sort’ was not declared in this scope sort (v + 1, v + m + 1, cmp); ^ user.cpp:31:17: error: expected unqualified-id before ‘int’ int rx, int ry; ^ user.cpp:32:25: error: ‘rad’ was not declared in this scope rx = rad (v[i].x); ^ user.cpp:33:9: error: ‘ry’ was not declared in this scope ry = rad (v[i].y); ^