请问TRACE函数干什么用的、怎么用

[sanshui_yangfei]

最好能举个例子，谢谢。

[zhuwenzheng]

TRACE( exp )

Parameters

exp

Specifies a variable number of arguments that are used in exactly the same way that a variable number of arguments are used in the run-time function printf.

Example

// example for TRACE
int i = 1;
char sz[] = "one";
TRACE( "Integer = %d, String = %s\n", i, sz );
// Output: 'Integer = 1, String = one'

// another example for TRACE
// Note that the TRACE() macro accepts a LPCTSTR for the format string
// parameter, while the other TRACEn() macros accept a LPCSTR.
// This means that you should use the _T() macro on formatting strings
// you supply if you want to build both _UNICODE and non-_UNICODE from
// the same source.

TRACE(_T("Hockey is best!\n"));

// remember to include <stdlib.h> to get rand() and its friends

int nCount = rand();
TRACE(_T("There are %d fans at this moment.\n"), nCount);

[Kklee]

用来帮助调试的，打印调试信息
需要先启用Trace功能，你在工具菜单里找找，我记不清了

[heartliubin]

TRACE是在debug 模式下在output 窗口显示信息的。可参考sprintf用法。

[born20c]

TRACE一般是调试程序用的.
上面一位大哥把msdn里的说明贴出来了, 可以仔细看看.
把msdn打开,在左边的搜索栏上点[索引],然后输入"TRACE",就是这些内容.

[kmcyz]

自己查查MSDN不就知道了，这种问题也那来问。