Compilare: user.cpp: In function ‘int numar()’: user.cpp:67:34: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(buff, DIM, fin); ^ user.cpp:77:34: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(buff, DIM, fin); ^ user.cpp:80:5: warning: ‘semn’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(semn == '-') ^