Mã chấm: 269485
Main.cc: In function ‘int main()’: Main.cc:8:5: error: ‘cout’ was not declared in this scope cout << "Nhap so nguyen duong n: "; ^~~~ Main.cc:8:5: note: suggested alternative: ‘cosl’ cout << "Nhap so nguyen duong n: "; ^~~~ cosl Main.cc:9:5: error: ‘cin’ was not declared in this scope cin >> n; ^~~ Main.cc:9:5: note: suggested alternative: ‘sin’ cin >> n; ^~~ sin Main.cc:19:5: error: expected primary-expression before ‘return’ return 0; ^~~~~~