Eroare de compilare: user.cpp:5:1: error: declaration does not declare anything [-fpermissive] int ; ^ user.cpp: In function ‘int main()’: user.cpp:8:10: error: ‘n’ was not declared in this scope f >> n; ^ user.cpp:10:5: error: ‘v’ was not declared in this scope v[1] = 0; ^ user.cpp:12:5: error: ‘nr’ was not declared in this scope nr = 2; ^ user.cpp:15:13: error: ‘i’ was not declared in this scope for(i = 1; i <= nr; ++i) ^ user.cpp:16:20: error: expected primary-expression before ‘=’ token v[i] * = 2; ^ user.cpp:17:13: error: ‘i’ was not declared in this scope for(i = 1; i <= nr; -i) ^ user.cpp:18:5: error: expected primary-expression before ‘}’ token } ^ user.cpp:18:5: error: expected ‘;’ before ‘}’ token