Compilare: main.cpp: In function 'int main()': main.cpp:62:13: warning: unused variable 'j' [-Wunused-variable] int j; ^ main.cpp:93:13: warning: unused variable 'ex1' [-Wunused-variable] int ex1,ex2; ^~~ main.cpp:93:17: warning: unused variable 'ex2' [-Wunused-variable] int ex1,ex2; ^~~ main.cpp:31:16: warning: unused variable 'x1' [-Wunused-variable] int tsk,i, x1,x2,y1,y2; ^~ main.cpp:31:19: warning: unused variable 'x2' [-Wunused-variable] int tsk,i, x1,x2,y1,y2; ^~ main.cpp:31:22: warning: unused variable 'y1' [-Wunused-variable] int tsk,i, x1,x2,y1,y2; ^~ main.cpp:31:25: warning: unused variable 'y2' [-Wunused-variable] int tsk,i, x1,x2,y1,y2; ^~