Eroare de compilare: user.cpp: In function ‘void back()’: user.cpp:24:15: error: ‘x’ was not declared in this scope while(x[k]<n) ^ user.cpp:27:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(ok(k)) if( k==n) tipar(); ^ user.cpp: In function ‘int main()’: user.cpp:39:11: error: too many arguments to function ‘void back()’ back(n); ^ user.cpp:18:6: note: declared here void back() ^