将数字转换为文本时出错 [英] Error with converting numbers to text

问题描述

我编写了一个将数字转换为文本的c ++程序。

我有两个问题（编辑：现在只有一个）：

$第一个问题是程序只将数字写成1-19正确，一切从20-99，例如当我写了一个例子34， answear我得到三十，而不是三十四，因为它应该是。三十之后，它只是出现错误，程序关闭。 [问题修复]

第二个问题是，我希望我可以在0-999之间写数字，而不仅仅是99， / p>

  #include< iostream> 
 #include< string> 
 using namespace std; 
 
 
 int main（）
 {
 int num，Ldight，Rdight; 
 
 string ones [] = {zero，one，two，three，four，
five，six，seven 八，九，十，b，十一，十二，十三，十四，十五，十七 ，nineteen}; 
 
 string tens [] = {二十，三十，四十，五十，六十，七十，八十，九十 
 
 
 cout<< 选择1-99之间的数字：; 
 cin>> num; 
 
 if（num <= 0）
 {
 cout< 错误！ << endl; 
} 
 
 else if（num> = 0&& num< = 19）
 {
 cout< 您的号码是：< ones [Rdight]; 
} 
 
 else if（num> = 20&& num< = 99）
 {
 Rdight = num％10; 
 Ldight = num / 10; 
 
 cout<< 您的号码是：< times [Ldight-2]< ones [Rdight]; 
} 
 
 return 0; 
} 
  

解决方案

您应该更改：

  cout< 您的号码是：< times [Ldight-2]< ones [num]; 
  

至

  cout<< 您的号码是：< times [Ldight-2]< ones [Rdight]; 
  

您计算一个从未使用的值。并且在之上的行 num访问索引超出范围。

Im writing a c++ program that convert numbers to text.

I got two problems(edit: just one now):

• The first problem is that the program only write out the numbers as 1-19 correct, everything from 20-99 such as when i wrote 34 for an example, the answear i get is thirty and not thirtyfour as it should be. After thirty it just comes errors and the program shut down. [Problem fixed]

• The second problem is that i wish i could write numbers between 0-999 and not only 99 but im not sure how to do that

   #include <iostream>
   #include <string>
   using namespace std;
  
  
  int main()
    {
   int num, Ldight, Rdight;
  
      string ones[] = {"zero", "one", "two", "three", "four", 
              "five","six", "seven", "eight", "nine", "ten",
              "eleven", "twelve", "thirteen", "fourteen",  "fifteen",
              "sixteen", "seventeen", "eighteen", "nineteen"};
  
  string tens[] = {"twenty","thirty","fourty","fifty", "sixty","seventy","eighty", "ninety"};
  
  
      cout << "Pick a number between 1-99: ";
      cin >> num;
  
        if(num <= 0)
            {
          cout << "ERROR!" << endl;
            }
  
     else if (num >= 0 && num <= 19)
            {
  cout << "Your number is: " << ones[Rdight] ;
            }
  
     else if (num >=20 && num <=99)
      {
  Rdight = num % 10;
  Ldight = num / 10;
  
  cout << "Your number is: " << tens[Ldight - 2] << ones[Rdight];
       }
  
  return 0;
  }
  

解决方案

You should change this:

cout << "Your number is: " << tens[Ldight - 2] << ones[num];

To

cout << "Your number is: " << tens[Ldight - 2] << ones[Rdight];

You compute a value you never use. And also in the line above ones num accesses index out of bounds.

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