Compilare: user.cpp: In function ‘void read(short int&)’: user.cpp:31:22: warning: right operand of comma operator has no effect [-Wunused-value] buff_poz == 0; ^ user.cpp:31:26: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] buff_poz == 0; ^ user.cpp:40:25: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] buff_poz = 0; ^