conferinta.cpp: In function 'int main()': conferinta.cpp:51: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result conferinta.cpp:52: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result conferinta.cpp:53: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result conferinta.cpp:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result conferinta.cpp: In function 'int Binary_Search()': conferinta.cpp:34: warning: 'ANS' may be used uninitialized in this function