Store strings

[lizhley123]

Hello everyone,
I'm stuck with this problem. For example, I have a text file:
"Hello
I Am
Liz Hurley"
How can I load the file and store "Hello" for str1, "I Am" for str2, & "Liz Hurley" for str3?
I came up with getline, but it doesn't work :( Thank you.

ifstream openFile;
openFile.open(input);
while(!openFile.eof())
{
getline(openFile, str1);
getline(openFile, str2);
getline(openFile, str3);
}

[48T7M4Gy]

http://www.cplusplus.com/doc/tutorial/files/

Have a look at this tutorial. There's a sample at the top and a few others further down which you can easily adapt. Instead of the test in quotation marks just use the string . eg myfile << str1; etc

You can then read what you have on the file using notepad or similar until you write code to read your file.

[Thomas1965]

Your idea with getline was right. Once you have read the 3 lines you need to check each line if it has quotes and add them if necessary.

One way to do it:

#include <iostream>
#include <string>
#include <fstream>

using namespace std;

void QuoteString (string& input)
{
  const char quote = '"';

  if (input[0] != quote)
  {
    input = quote + input;
  }
  if (input[input.size() - 1] != quote)
  {
    input += quote;
  }
}

int main ()
{
  string filename = "input.txt";
  ifstream src (filename.c_str());

  if (!src) // for some reason it can't be opend
  {
    perror ("File error: ");
    return -1;
  }
  string str1, str2, str3;
  while (src)
  {
    getline (src, str1);
    getline (src, str2);
    getline (src, str3);
  }
  QuoteString (str1);
  QuoteString (str2);
  QuoteString (str3);

  cout << "str1: " << str1 << "\n";
  cout << "str2: " << str2 << "\n";
  cout << "str3: " << str3 << "\n";
  
  system ("pause");
  return 0;
}

[lizhley123]

Thank you guys Kermort and Thomas. However, my getline functions didn't work at all :( The result I got are blanks which I assume it read nothing from the file.

[48T7M4Gy]

1000 pardons because I misread your comment about strings. However, try this:

#include <iostream>
#include <fstream>
#include <string>

int main()
{
    std::fstream inFile("getstringfile.txt");
    std::string temp = "";
    
    if (inFile.is_open())
    {
        while (std::getline(inFile, temp))
            std::cout << '*' << temp << '*' << std::endl;
    }
    else
        std::cout << "File not opened\n";
    
    return 0;
}

Text file getstringfile.txt I used is:

Hello
I Am
Liz Hurley

And the output is:

*Hello*
*I Am*
*Liz Hurley*
Program ended with exit code: 0

The asterisks are there to verify each line was read as a single strings.

PS You wanted str1, str2, ... instead of temp. This means you read in separate variables but I'll leave that to you. It's not a complicated adaptation, and better still, keep your program and make the few necessary changes. :)

[lizhley123]

Thank you Kemort :)

[48T7M4Gy]

My pleasure. On reflection the adaptation might need a hint:

if (inFile.is_open())
    {
        while (std::getline(inFile, str1) && std::getline( ... some more stuff for the other strings ){}
        
        std::cout << '*' << str1 << '*' << std::endl;
       //some more lines for the other strings
    }
    else
        std::cout << "File not opened\n";