Compilare: user.cpp: In function ‘int search_poz(int, int)’: user.cpp:31:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(hassh[x][i].first == p) ^ user.cpp: In function ‘int main()’: user.cpp:89:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= n; i++) ^ user.cpp:84:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.in", "r", stdin); ^ user.cpp:85:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.out", "w", stdout); ^ user.cpp: In function ‘void citeste(unsigned int&)’: user.cpp:18:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(T, 1, 30, stdin), poz=0; ^ user.cpp:23:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(T, 1, 30, stdin), poz=0; ^