Compilare: main.cpp: In function 'int main()': main.cpp:106:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vec.size() && vec[i] < 10;i++) ~^~~~~~~~~~~ main.cpp: In member function 'char Parser::getChar()': main.cpp:16:48: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(str, sizeof(char), SIZE, fin); ^