用createfile，writefile保存数据到txt文件，出现乱码解决思路

用createfile，writefile保存数据到txt文件，出现乱码 - C++ Builder / Windows SDK/API
我是要把double型的数据写到txt文件中，代码如下：

 hfile=CreateFile("F:\\1.txt",GENERIC_WRITE,FILE_SHARE_WRITE,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
 char *d=new char[5];
for（...）
{
  ....省略了数据的计算过程，dbValue是double型的数据
memcpy(d,&dbValue,sizeof(double));
WriteFile(hfile,(LPSTR)&d,sizeof(d[5]),&dwWrites,NULL);
SetFilePointer(hfile,2,NULL,FILE_END);

}
CloseHandle(hfile);
但是这样出来是乱码。

[解决办法]
给你个简单例子：

C/C++ code

char *p = new char[20];memset(p, 0x0, 20);double dbValue = 1234.56;sprintf(p, "%.2f", dbValue);DWORD dwWrites;WriteFile(hfile, p, strlen(p), &dwWrites,NULL);delete []p;
[解决办法]
  
CBC 帮助

 FILE *stream;
  int i = 100;
  char c = 'C';
  float f = 1.234;

  /* open a file for update */
  stream = fopen("1.txt", "w+");

  /* write some data to the file */
  fprintf(stream, "%d %c %f", i, c, f);

  /* close the file */
  fclose(stream);