Compilare: user.cpp: In function ‘void citire()’: user.cpp:25: 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 rezolva()’: user.cpp:118: warning: comparison between signed and unsigned integer expressions