Compilare: user.cpp:7:0: warning: "INFINITY" redefined [enabled by default] #define INFINITY 5000000 ^ In file included from /usr/include/math.h:40:0, from user.cpp:4: /usr/include/i386-linux-gnu/bits/inf.h:27:0: note: this is the location of the previous definition # define INFINITY (__builtin_inff()) ^ user.cpp: In function ‘double calcDist(point, point, point)’: user.cpp:56:21: warning: unused variable ‘dist1’ [-Wunused-variable] double a, b, c, dist1, dist2, _x = INFINITY, _y = INFINITY; ^ user.cpp:56:28: warning: unused variable ‘dist2’ [-Wunused-variable] double a, b, c, dist1, dist2, _x = INFINITY, _y = INFINITY; ^