Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:18:38: 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:191:12: warning: 's2' may be used uninitialized in this function [-Wmaybe-uninitialized] cs2=dir2[s1][s2]; ~~~^~~~~~~~~~~~~ main.cpp:191:12: warning: 's1' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:185:13: warning: 'clast' may be used uninitialized in this function [-Wmaybe-uninitialized] last=clast; ~~~~^~~~~~