Compilare: user.cpp: In function ‘int main()’: user.cpp:130:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<D.size(); i++) ^ user.cpp:138:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i==D.size()) ^ user.cpp: In function ‘int Buffer_INT()’: user.cpp:58:44: 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, VAL, stdin), poz=0; ^ user.cpp:64:44: 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, VAL, stdin), poz=0; ^ user.cpp: In function ‘int main()’: user.cpp:89:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cabana2.in", "r", stdin); ^ user.cpp:90:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cabana2.out", "w", stdout); ^