Compilare: user.cpp: In function ‘int main()’: user.cpp:66:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] mid = st + dr >> 1; ~~~^~~~ user.cpp: In function ‘void read(int&)’: user.cpp:13:39: 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, dim, stdin), pos = 0; ^ user.cpp:17:39: 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, dim, stdin), pos = 0; ^ user.cpp: In function ‘int main()’: user.cpp:40:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aib.in", "r", stdin); ^