Compilare: user.cpp:10:33: warning: ‘typedef’ was ignored in this declaration [enabled by default] typedef struct str{int x; int y;}; ^ user.cpp:11:43: warning: ‘typedef’ was ignored in this declaration [enabled by default] typedef struct str2{int x; int y; int val;}; ^ user.cpp: In function ‘bool verific(int)’: user.cpp:21:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j; ^ user.cpp:21:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^