Compilare: main.cpp: In function 'int main()': main.cpp:86:21: warning: unused variable 'l1' [-Wunused-variable] int x1,x2,y1,y2,l1,l2,aux,aux2; ^~ main.cpp:86:24: warning: unused variable 'l2' [-Wunused-variable] int x1,x2,y1,y2,l1,l2,aux,aux2; ^~ main.cpp:86:27: warning: unused variable 'aux' [-Wunused-variable] int x1,x2,y1,y2,l1,l2,aux,aux2; ^~~ main.cpp:86:31: warning: unused variable 'aux2' [-Wunused-variable] int x1,x2,y1,y2,l1,l2,aux,aux2; ^~~~