Getting a text file of asian characters with C++

Question

I am completely new to programming, and I am teaching myself C++ via Dr. Bronson's book.

I have looked at other fixes and I don't understand them.

I am trying to do a project where I convert numbers to their phrase value. 1 = One, 2 = Two, etc. I cannot have spaces between one and two so I am outputting with no spaces. When I opened up the text file, I had only Asian characters in the file. Being a novice, my first concern was that I have been hacked. Anyhow, here is my code.

int main()
{
    int i; 
    int length, mod, number1, number2,number3,numbera,numberb; 
    string  str1;
    string filename = "C:\\Users\\miram\\OneDrive\\Documents\\Visual Studio 2017\\CPlusPlusProjects\\Project Euler\\Files\\17.WordSum1.txt";
    ofstream outFile; 

    outFile.open(filename.c_str()); 
    if (outFile.fail())
    {
        cout << "\nThe file named " << filename << " did not successfully open."
             << "\Please check to make sure the file exists."; 
    }


    for (i = 900; i <= 999; i++)
    {
        if (i <= 999)
        {
            length = (log(i) / log(10)) + 1;

            cout << "i: " << i << " " << length << endl;
        }

        else if (i == 1000)
        {
            length = 4;
            cout << "i: " << i << " " << length << endl;
        }


        if (length == 3)
        {
            number1 = i % 10; 
            numbera = i / 10; 
            number2 = numbera % 10; 
            numberb = i / 100; 
            number3 = numberb; 
            cout << "Number 3: " << number3 << endl; 
            cout << "Number 2: " << number2 << endl; 
            cout << "Number 1: " << number1 << endl; 
        }


        switch (length)
        {

        case 4: 
        {
        outFile << "OneThousand"; 
        break; 
        }

        case 3: 
        {
            if (number3 == 1)
            {
                outFile << "OneHundredand";
            }
            else if (number3 == 2)
            {
                outFile << "TwoHundredand";
            }
            else if (number3 == 3)
            {
                outFile << "ThreeHundredand";
            }
            else if (number3 == 4)
            {
                outFile << "FourHundredand";
            }
            else if (number3 == 5)
            {
                outFile << "FiveHundredand";
            }
            else if (number3 == 6)
            {
                outFile << "SixHundredand";
            }
            else if (number3 == 7)
            {
                outFile << "SevenHundredand";
            }
            else if (number3 == 8)
            {
                outFile << "EightHundredand";
            }
            else if (number3 == 9);
            {
                outFile << "NineHundredand";
            }
            break;
        }
        }


    }

    return 0; 
}

Text file with Asian characters

Answer 1

It looks like you've found a corner case where Notepad's encoding detection guesses wrong.

The string "NineHundredand", encoded using ASCII gives the byte sequence 0x4E 0x69 0x6E 0x48 0x75 0x6E 0x64 0x72 0x65 0x64 0x61 0x6E 0x64. It turns out that same sequence of bytes is also valid UTF-16 encoding for the string "楎敮畈摮敲慤摮". Since there's nothing to tell Notepad which interpretation of the bytes is correct, it has to guess. How it makes the guess it does is likely quite complicated and probably not documented anywhere (at least not publicly), but in this case it guessed wrong. Strangely enouough, it seems to depend on how many times you repeat the phrase "NineHundredand". Less than 15 times and it will guess the encoding as ASCII; more than that and it decides the file is encoded using UTF-16.

Answer 2

I complie your code by gcc in linux, there are some errors.

as.cpp: In function ‘int main()’:
as.cpp:9: error: aggregate ‘std::ofstream outFile’ has incomplete type and cannot be defined
as.cpp:15: error: unknown escape sequence '\P'
as.cpp:23: error: ‘log’ was not declared in this scope

And I add math.h to correct log problem.Changing \P to \nP to correct the second one.As to the first one correct by using fstream.My code is on the below.(only provide first 17 lines,others are equals to yours)

1 #include<iostream>
  2 #include<fstream>
  3 #include<math.h>
  4 using namespace std;
  5 int main()
  6 {
  7         int i;
  8         int length, mod, number1, number2,number3,numbera,numberb;
  9         string  str1;
 10         string filename = "C:\\Users\\miram\\OneDrive\\Documents\\Visual Studio 2017\\CPlus    PlusProjects\\Project Euler\\Files\\17.WordSum1.txt";
 11         std::ofstream outFile;
 12         outFile.open(filename.c_str());
 13         if (outFile.fail())
 14         {
 15                 cout << "\nThe file named " << filename << " did not successfully open."
 16                         << "\nPlease check to make sure the file exists.";
 17         }

And here is part of outputs.

  1 i: 900 3
  2 Number 3: 9
  3 Number 2: 0
  4 Number 1: 0
  5 i: 901 3
  6 Number 3: 9
  7 Number 2: 0
  8 Number 1: 1
  9 i: 902 3
 10 Number 3: 9
 11 Number 2: 0
 12 Number 1: 2
 13 i: 903 3
 14 Number 3: 9
 15 Number 2: 0
 16 Number 1: 3
 17 i: 904 3
 18 Number 3: 9
 19 Number 2: 0
 20 Number 1: 4
 21 i: 905 3
 22 Number 3: 9
 23 Number 2: 0
 24 Number 1: 5
 25 i: 906 3
 26 Number 3: 9
 27 Number 2: 0
 28 Number 1: 6
 29 i: 907 3
 30 Number 3: 9
 31 Number 2: 0
 32 Number 1: 7