为啥wspintf歧视数字？

Question

// wsprintf.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "stdio.h"

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
  // TODO: Place code here.
    TCHAR       szBufferx [100] ;
 long length;

    //length=wsprintf (szBufferx, TEXT ("%5d"),123456789);//这句输出是对的
    length=wsprintf (szBufferx, TEXT ("%5d"),13023289560);
    //为什么上面这句输出来的值不对呢？
    MessageBox (NULL, szBufferx, "szCaption", 0|1) ;
 return 0;
}

 

 

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maiyude

Answer 1

不是歧视。而是由于13023289560越界了。大于int的最大值。

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麻烦把正确答案设为解答。

Answer 2

Type Name	Bytes		Range of Values
int	4		–2,147,483,648 to 2,147,483,647

Answer 3

length=wsprintf (szBufferx, TEXT ("%5d"),13023289560);
--》
length=wsprintf (szBufferx, TEXT ("%I64d"),13023289560);

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Visual C++ enthusiast, like network programming and driver development. At present is being engaged in the WinCE/Windows Mobile platform embedded development.

Answer 4

对于大数（超过变量存储范围）最好直接用字符串显示

Answer 5

谢谢各位大大，，，，，，

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红尘多可笑，痴情最无聊，目空一切也好