Eroare de compilare: user.cpp: In function ‘void print()’: user.cpp:16:22: error: ‘vf’ was not declared in this scope for(int i=1; i<=vf; i++) g << st[i]; ^ user.cpp:16:31: error: ‘g’ was not declared in this scope for(int i=1; i<=vf; i++) g << st[i]; ^ user.cpp:17:6: error: ‘g’ was not declared in this scope g << '\n'; ^ user.cpp: In function ‘int main()’: user.cpp:36:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s); i++) ^ user.cpp:63:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<strlen(s)) ^