Compilare: user.cpp: In function ‘int numarare()’: user.cpp:11:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<sir.size(); i++) ^ user.cpp: In function ‘int numararec()’: user.cpp:22:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp:20:20: warning: ‘prop’ is used uninitialized in this function [-Wuninitialized] if(isalpha(prop)) ^