Compilare: user.cpp: In function ‘void interpret()’: user.cpp:35:9: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] int b = read(); ^ user.cpp: In function ‘char nextch()’: user.cpp:13:63: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (pos == BUF_SIZE) fread(buf, BUF_SIZE, 1, fin), pos = 0; ^