Compilare: user.cpp: In function ‘void citire(FILE*, long int&, nod**&)’: user.cpp:11: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:17: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:93: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long long int’