Compilare: user.cpp: In function ‘void read()’: user.cpp:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void lsd_radix()’: user.cpp:60: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int cifra_k(int, int)’: user.cpp:38: warning: ‘digit’ may be used uninitialized in this function