Compilare: user.cpp: In function ‘int main()’: user.cpp:66: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:68: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:70: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:72: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int bsearch0(int)’: user.cpp:14: warning: ‘mid’ may be used uninitialized in this function user.cpp: In function ‘int bsearch1(int)’: user.cpp:32: warning: ‘mid’ may be used uninitialized in this function user.cpp: In function ‘int bsearch2(int)’: user.cpp:48: warning: ‘mid’ may be used uninitialized in this function