Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:17:29: 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); ^ main.cpp: In function 'void aria()': main.cpp:78:17: warning: 'n' is used uninitialized in this function [-Wuninitialized] for(i = 1;i <= n;i++){ ~~^~~~