Compilare: user.cpp: In function ‘void add(int, int)’: user.cpp:104:9: warning: unused variable ‘mata’ [-Wunused-variable] int mata = 5; ^ user.cpp: In function ‘int getNumber()’: user.cpp:140:43: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(BUF , 1 , Bsize , stdin); ^ user.cpp:150:43: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(BUF , 1 , Bsize , stdin); ^