#include <iostream> #include <cstdint> using namespace std; int main() { uint64_t x; cout << "請輸入所得淨額:"; cin >> x; switch (x) { case 1 ... 500000: cout << " " << x * 0.05 << endl; break; default: cout << " " << x * 0.4 - 625000 << endl; break; } return 0; }