Compilare: user.cpp: In function ‘void add(char*)’: user.cpp:23: warning: comparison between signed and unsigned integer expressions user.cpp:25: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void del(char*)’: user.cpp:52: warning: comparison between signed and unsigned integer expressions user.cpp:54: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void nr_aparitii(char*)’: user.cpp:76: warning: comparison between signed and unsigned integer expressions user.cpp:78: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void cmlprefix(char*)’: user.cpp:102: warning: comparison between signed and unsigned integer expressions user.cpp:104: warning: comparison between signed and unsigned integer expressions