Compilare: user.cpp: In function ‘void afis()’: user.cpp:34:13: warning: unused variable ‘delta’ [-Wunused-variable] var delta = (1<<(i-1)); ^ user.cpp: In function ‘int main()’: user.cpp:104:9: warning: unused variable ‘q’ [-Wunused-variable] var q, x1, y1, x2, y2; ^ user.cpp:104:12: warning: unused variable ‘x1’ [-Wunused-variable] var q, x1, y1, x2, y2; ^ user.cpp:104:16: warning: unused variable ‘y1’ [-Wunused-variable] var q, x1, y1, x2, y2; ^ user.cpp:104:20: warning: unused variable ‘x2’ [-Wunused-variable] var q, x1, y1, x2, y2; ^ user.cpp:104:24: warning: unused variable ‘y2’ [-Wunused-variable] var q, x1, y1, x2, y2; ^