将浮点数导出到CSV文件

问题描述

我需要将CSV文件中的浮点数导出为英语本地设置中的十进制符号为，(逗号)".我确实将该数字用双引号引起来，以防止在导出到CSV之前对我的数字进行格式化，例如使用定界符选项卡将其导出为CSV例如"1,23456789".但是，当我查看该文件时，它显示为"123,456,789".即使我使用双引号，我的格式似乎也已更改.

请给我一些建议.

我正在使用cstring格式化浮点数到字符串.在excel和记事本中，这两个地方都显示了错误的值.以下是我的代码，

Hi,


I need to export floating numbers in CSV file with decimal symbol as ",(comma)" in english local settings. I did put that numbers in double quotes in order to prevent my numbers from being formatted before exporting to CSV for example "1,23456789" with the delimiter tab . But when I viewed the file it shows "123,456,789" . Seems like my format has been changed even though i have put in double quotes.

Please give me some suggestion.

I am using cstring to format the float to string. Both in excel and notepad, in both the places it is showing wrong value. Below is my code,

CFileStream _fileLog;
CString strDelimiter = _T("\t");
CString strQuote = _T("\"");
CString strContent;
strContent = strQuote + _T("1,23456789") + strQuote + strDelimiter +
             strQuote + _T("9,12345678") + strQuote;
fileLog.Write(strContent);

推荐答案

#include <iostream>
#include <fstream>
using namespace std;

int main () {

  fstream filestr;
  string delim = "\t", quotes = "\"", content;

  filestr.open ("test.txt", fstream::in | fstream::out | fstream::app);

  content = quotes + "1,23456789" + quotes + delim;
  content += quotes + "9,12345678" + quotes + delim;

  filestr << content;

  filestr.close();

  return 0;
}

输出

Output

"1,23456789"    "9,12345678"    

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