Compilare: main.cpp: In function 'int zero(int)': main.cpp:12:9: warning: unused variable 'st' [-Wunused-variable] 12 | int st=1, dr=n; | ^~ main.cpp:12:15: warning: unused variable 'dr' [-Wunused-variable] 12 | int st=1, dr=n; | ^~ main.cpp: In function 'int unu(int)': main.cpp:31:1: warning: no return statement in function returning non-void [-Wreturn-type] 31 | } | ^ main.cpp: In function 'int doi(int)': main.cpp:43:1: warning: no return statement in function returning non-void [-Wreturn-type] 43 | } | ^