Compilare: user.cpp: In function ‘void aduna(int, int, int, int, int, int)’: user.cpp:112:9: warning: unused variable ‘ln’ [-Wunused-variable] int ln = l1, cn = c1; ^ user.cpp:112:18: warning: unused variable ‘cn’ [-Wunused-variable] int ln = l1, cn = c1; ^ user.cpp: In member function ‘char InParser::read_ch()’: user.cpp:22:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^