Compilare: user.cpp: In function ‘void read()’: user.cpp:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int binary_search_equal(int, int*, int)’: user.cpp:18: warning: unused variable ‘i’ user.cpp: In function ‘int binary_search_max(int, int*, int)’: user.cpp:34: warning: unused variable ‘i’ user.cpp: In function ‘int binary_search_min(int, int*, int)’: user.cpp:48: warning: unused variable ‘i’ user.cpp: In function ‘int main()’: user.cpp:64: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:65: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:71: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int binary_search_equal(int, int*, int)’: user.cpp:18: warning: ‘mid’ may be used uninitialized in this function user.cpp: In function ‘int binary_search_max(int, int*, int)’: user.cpp:34: warning: ‘mid’ may be used uninitialized in this function user.cpp: In function ‘int binary_search_min(int, int*, int)’: user.cpp:48: warning: ‘mid’ may be used uninitialized in this function