Compilare: user.cpp: In function ‘void spart()’: user.cpp:18:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[car][j++]++; ^ user.cpp:19:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[car][0]++; ^ user.cpp: In function ‘bool verif(int)’: user.cpp:35:13: warning: operation on ‘mid’ may be undefined [-Wsequence-point] mid = mid >>= 1; ~~~~^~~~~~~~~~~ user.cpp:63:21: warning: operation on ‘mid’ may be undefined [-Wsequence-point] mid = mid >>= 1; ~~~~^~~~~~~~~~~ user.cpp:28:9: warning: unused variable ‘ck’ [-Wunused-variable] int ck=k; ^~ user.cpp: In function ‘int bin_search()’: user.cpp:90:13: warning: operation on ‘mid’ may be undefined [-Wsequence-point] mid = mid >>= 1; ~~~~^~~~~~~~~~~