Compilare: user.cpp: In function ‘void read()’: user.cpp:12: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:77: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:80: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int binary_search1(int)’: user.cpp:39: warning: ‘find’ may be used uninitialized in this function user.cpp: In function ‘int binary_search2(int)’: user.cpp:56: warning: ‘find’ may be used uninitialized in this function