Compilare: main.cpp: In function 'int main()': main.cpp:160:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<div.size(); j++) { ~^~~~~~~~~~~ main.cpp:163:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<div.size(); j++) { ~^~~~~~~~~~~ main.cpp:172:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<div.size(); j++) { ~^~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:30:31: 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, 131072, fin); ^