Borderou de evaluare (job #46331)

Compilare: user.cpp: In function ‘void read()’: user.cpp:61:28: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp: In function ‘void show()’: user.cpp:69:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘bool comp(std::pair<int, char>, std::pair<int, char>)’: user.cpp:81:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.cpp:81:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.cpp: In function ‘void afiseaza()’: user.cpp:91:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int charToNr(char)’: user.cpp:40:1: warning: control reaches end of non-void function [-Wreturn-type]