Eroare de compilare: main.cpp:27:10: error: 'void heap::operator--(int)' cannot have default arguments 27 | void operator--(int a=0) | ^~~~~~~~ main.cpp: In member function 'void heap::operator-=(int&)': main.cpp:70:39: warning: unused variable 'z' [-Wunused-variable] 70 | int x=hipi[--n],y=cron[n],z=inv[y]; | ^ main.cpp: In function 'std::ostream& operator<<(std::ostream&, heap&)': main.cpp:107:14: error: no 'operator--(int)' declared for postfix '--' [-fpermissive] 107 | a--; | ~^~ Non zero exit status: 1