Compilare: user.cpp: In function ‘void sift(long int, long int)’: user.cpp:37: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘void heap(long int, long int)’: user.cpp:45: warning: unused variable ‘i’ user.cpp: In function ‘void sortare(long int)’: user.cpp:59: warning: unused variable ‘n2’ user.cpp:59: warning: unused variable ‘i’