stdlib.h

四楼正确

#include "stdio.h"
#include "afx.h"
#include "iostream.h"
#include "stdlib.h"
void main()
{
CString s="3.5";
double d1 = atof(s);
double d2 = 4.11;
CString temp;
temp.Format("%f", d2);
printf("%f\n",d1);
printf("%s",temp);
}

在VC6,编译构建后出现下面的错误：

----------Configuration: cstringlianxi - Win32 Debug--------------------
Linking...
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endthreadex
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __beginthreadex
Debug/cstringlianxi.exe : fatal error LNK1120: 2 unresolved externals
执行 link.exe 时出错.

cstringlianxi.exe - 1 error(s), 0 warning(s)

不知道为何

CString是mfc类. 所以请你建MFC工程.

double d2 = 4.11;
CString temp;
temp.Format("%f", d2);


格式化输出后，4.1100000


后面的的0怎样除去，比如只想输出4.11

[此贴子已经被作者于2007-9-29 23:25:51编辑过]

double d2 = 4.11;
CString temp;
temp.Format("%f", d2);
temp.TrimRight('0');