Compilare: main.cpp: In function 'int main()': main.cpp:90:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<ord.size(); ++i) ~^~~~~~~~~~~ main.cpp: In function 'void refresh()': main.cpp:47:47: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] cursor = 0, fread(buffer, 1, bsize, stdin); ^ main.cpp: In function 'int main()': main.cpp:71:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("volum.in", "r", stdin); ^ main.cpp:72:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("volum.out", "w", stdout); ^