Compilare: user.cpp: In function ‘int reinitializare_copie(int)’: user.cpp:42: warning: no return statement in function returning non-void user.cpp: In function ‘int back(int)’: user.cpp:73: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:83: warning: no return statement in function returning non-void user.cpp: In function ‘int main()’: user.cpp:88: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:90: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result