Compilare: main.cpp: In function 'int main()': main.cpp:89:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < sums.size(); ++i) ~~^~~~~~~~~~~~~ main.cpp: In member function 'char ParseIn::nextch()': main.cpp:20:28: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, BMAX, 1, fi); ^