Eroare de compilare: user.cpp: In function 'int main()': user.cpp:17: error: 'vector' was not declared in this scope user.cpp:17: error: expected primary-expression before 'int' user.cpp:17: error: expected `;' before 'int' user.cpp:18: error: 'cin' was not declared in this scope user.cpp:18: error: 'n' was not declared in this scope user.cpp:19: error: 'i' was not declared in this scope user.cpp:22: error: 'sort' was not declared in this scope user.cpp:23: error: expected `;' before 'pct' user.cpp:27: error: expected `}' at end of input