Compilare: user.cpp: In function ‘void citire()’: user.cpp:12: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:15: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int ProceseazaDiagonala(int, int)’: user.cpp:50: warning: no return statement in function returning non-void