Compilare: main.cpp: In function 'int main()': main.cpp:10:34: warning: unused variable 'sz_db' [-Wunused-variable] int a,b,oszto,db=0,DB=0,szam,sz_db=0,max_db,c; ^~~~~ main.cpp:10:42: warning: variable 'max_db' set but not used [-Wunused-but-set-variable] int a,b,oszto,db=0,DB=0,szam,sz_db=0,max_db,c; ^~~~~~ main.cpp:38:20: warning: 'szam' may be used uninitialized in this function [-Wmaybe-uninitialized] output <<szam<<" "<<DB<<" "; ^~~