[4-7]進階計算機

李泳霖

1. using static System.Formats.Asn1.AsnWriter;
   
2. 
   
3. 
   
4. double num1, num2;
   
5. string oper;
   
6. re:
   
7. System.Console.Write("請輸入第一個數:");
   
8. num1 = System.Convert.ToDouble(System.Console.ReadLine());
   
9. 
   
10. System.Console.Write("請輸入要做的運算(+、-、*、/) : ");
    
11. oper= System.Console.ReadLine();   
    
12. 
    
13. System.Console.Write("請輸入第二個數:");
    
14. num2 = System.Convert.ToDouble(System.Console.ReadLine());
    
15. 
    
16. if (oper == "+")
    
17.     System.Console.WriteLine(num1 + " + " + num2 + " = " + (num1 + num2));
    
18. 
    
19. else if (oper == "-")
    
20.     System.Console.WriteLine(num1 + " - " + num2 + " = " + (num1 - num2));
    
21. 
    
22. else if (oper == "*")
    
23.     System.Console.WriteLine(num1 + " * " + num2 + " = " + (num1 * num2));
    
24. 
    
25. else if (oper == "/")
    
26.     System.Console.WriteLine(num1 + " / " + num2 + " = " + (num1 / num2));
    
27. 
    
28. else
    
29.     System.Console.WriteLine("不合法的運算符號");
    
30. 
    
31. goto re;

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