Compilare: user.cpp: In function ‘void verif()’: user.cpp:50: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:109: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘void back(int)’: user.cpp:158: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:168: warning: too few arguments for format user.cpp:168: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result