Compilare: user.cpp: In function ‘int find(int)’: user.cpp:25: warning: unused variable ‘i’ user.cpp:25: warning: unused variable ‘j’ user.cpp: In function ‘void det_apm()’: user.cpp:50: warning: unused variable ‘j’ user.cpp: In function ‘void read()’: user.cpp:80: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:83: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result