Compilare: main.cpp: In function 'int main()': main.cpp:92:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j < srt[0].size()) ~~^~~~~~~~~~~~~~~ main.cpp:95:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j < srt[0].size() && srt[0][j].slope > it.slope){ ~~^~~~~~~~~~~~~~~ main.cpp:99:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j < srt[0].size()) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void Read(int&)': main.cpp:36:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), poz = 0; ^ main.cpp:41:42: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(f, MAX, 1, IN), poz = 0; ^