Compilare: main.cpp: In function 'int main()': main.cpp:36:11: warning: unused variable 'xa' [-Wunused-variable] 36 | float xa = v[1].x, ya = v[1].y, xb = v[n].x, yb = v[n].y; | ^~ main.cpp:36:24: warning: unused variable 'ya' [-Wunused-variable] 36 | float xa = v[1].x, ya = v[1].y, xb = v[n].x, yb = v[n].y; | ^~ main.cpp:36:37: warning: unused variable 'xb' [-Wunused-variable] 36 | float xa = v[1].x, ya = v[1].y, xb = v[n].x, yb = v[n].y; | ^~ main.cpp:36:50: warning: unused variable 'yb' [-Wunused-variable] 36 | float xa = v[1].x, ya = v[1].y, xb = v[n].x, yb = v[n].y; | ^~