Compilare: user.cpp: In function ‘int main()’: user.cpp:56: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:58: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:62: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:66: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int bsearch0(int, int, int)’: user.cpp:6: warning: ‘m’ may be used uninitialized in this function user.cpp: In function ‘int bsearch1(int, int, int)’: user.cpp:23: warning: ‘m’ may be used uninitialized in this function user.cpp: In function ‘int bsearch2(int, int, int)’: user.cpp:38: warning: ‘m’ may be used uninitialized in this function