Compilare: main.cpp: In function 'void process()': main.cpp:95:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < cur.size(); ++i) ~~^~~~~~~~~~~~ main.cpp:103:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < cur.size(); j += 2) ~~^~~~~~~~~~~~ main.cpp:107:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j < cur.size(); j += 2) ~~^~~~~~~~~~~~ main.cpp:111:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = position; j < cur.size(); j += 2) ~~^~~~~~~~~~~~ main.cpp:120:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < cur.size(); j += 2) ~~^~~~~~~~~~~~ main.cpp:124:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int start = 2; start < cur.size(); start += 2) ~~~~~~^~~~~~~~~~~~ main.cpp:128:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lst >= cur.size()) ~~~~^~~~~~~~~~~~~ main.cpp:136:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j < cur.size(); j += 2) ~~^~~~~~~~~~~~ main.cpp:141:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int start = 3; start < cur.size(); start += 2) ~~~~~~^~~~~~~~~~~~ main.cpp:145:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lst >= cur.size()) ~~~~^~~~~~~~~~~~~ main.cpp:151:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j <= cur.size() / 2 + 1; ++j) ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:155:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(position >= cur.size()) ~~~~~~~~~^~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:15:29: 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); ^