Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:41:9: error: ‘bck’ was not declared in this scope bck() ^ user.cpp:42:5: error: expected ‘;’ before ‘fclose’ fclose(f); ^ user.cpp:15:10: warning: unused variable ‘n’ [-Wunused-variable] ll b,n=0,d,p,x,nrd=0,i; ^ user.cpp:15:14: warning: unused variable ‘d’ [-Wunused-variable] ll b,n=0,d,p,x,nrd=0,i; ^ user.cpp:16:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld",&b); ^