CString类型的变量怎么用printf输出？

Question

void CCalculateDlg::OnBnClickedButton11()
{
CString a=“analjsdaka”；
// TODO: 在此添加控件通知处理程序代码
FILE *fp;
if(fopen_s(&fp,"Result.txt","wb+") != 0)

{
printf("打开指定的文件失败！");
exit(1);
}
fprintf(fp,"argc=%s",a.GetBuffer(shiyan.GetLength()));
fclose(fp);
this->OnCancel();
}
------------------
输出结果不是analjsdaka，而是a
fprintf(fp,"argc=%s",a.GetBuffer(a.GetLength()));

Answer 1

CString a="xxxxx";
printf("%s",(LPCTSTR)a);

Answer 2

fprintf(fp,"argc=%s",a);
你是要输出变量a的值吧？
如果a.GetBuffer(a.GetLength()));的话是输出a的最后一个字符

Answer 3

printf(fp,"argc=%s",a.GetBuffer(a.GetLength()));
这样应该可以

Answer 4

TRACE("%s",a);