Compilare: user.cpp: In function ‘int main()’: user.cpp:86:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] mid = st + dr >> 1; ^ user.cpp: In function ‘void read(int&)’: user.cpp:15:51: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++p == dim) fread(buff, 1, dim, stdin), p = 0; ^ user.cpp:18:51: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++p == dim) fread(buff, 1, dim, stdin), p = 0; ^ user.cpp: In function ‘int main()’: user.cpp:60:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ratina.in", "r", stdin); ^ user.cpp:61:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ratina.out", "w", stdout); ^