Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:24:38: 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); ^ main.cpp: In function 'int main()': main.cpp:77:29: warning: 'endx' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<start<<" "<<endx<<" "<<minx; ^~~ main.cpp:77:18: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<start<<" "<<endx<<" "<<minx; ^~~