9 {
11
12 try {
13 double result = calc.add(5.0)
14 .divide(3.0)
15 .getValue();
16
17 std::cout << "计算结果: " << result << std::endl;
18 }
19 catch (const std::exception& e) {
20 std::cerr << "计算错误: " << e.what() << std::endl;
21 }
22
23 return 0;
24}