Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9:5: error: ‘vector’ was not declared in this scope vector<bool> pr(n / 2 + 1); ^ user.cpp:9:12: error: expected primary-expression before ‘bool’ vector<bool> pr(n / 2 + 1); ^ user.cpp:9:12: error: expected ‘;’ before ‘bool’ user.cpp:14:13: error: ‘pr’ was not declared in this scope if (pr[i] == 0) // 2i+1 is definitely prime ^ user.cpp:25:13: error: ‘pr’ was not declared in this scope if (pr[i] == 0) ^