Compilare: main.cpp: In function 'int main()': main.cpp:31:12: warning: unused variable 'left' [-Wunused-variable] 31 | int i, left, right, mid, pos; | ^~~~ main.cpp:31:18: warning: unused variable 'right' [-Wunused-variable] 31 | int i, left, right, mid, pos; | ^~~~~ main.cpp:31:25: warning: unused variable 'mid' [-Wunused-variable] 31 | int i, left, right, mid, pos; | ^~~ main.cpp:31:30: warning: unused variable 'pos' [-Wunused-variable] 31 | int i, left, right, mid, pos; | ^~~