Compilare: user.cpp: In function ‘void citire()’: user.cpp:21: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[40]’ user.cpp:22: warning: NULL used in arithmetic user.cpp:30: warning: NULL used in arithmetic user.cpp:42: warning: NULL used in arithmetic user.cpp:15: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result