Compilare: main.c: In function 'main': main.c:30:3: warning: 'return' with no value, in function returning non-void [-Wreturn-type] 30 | return ; | ^~~~~~ main.c:23:5: note: declared here 23 | int main() | ^~~~ main.c:57:6: warning: unused variable 'ok' [-Wunused-variable] 57 | int ok = 0; | ^~ main.c:56:6: warning: unused variable 'poz' [-Wunused-variable] 56 | int poz = 0; | ^~~