error LNK2001: unresolved external symbol __fmemcpy ?

[AladdinX]

这个问题怎么办啊 ？

顺便问一下，怎么给分 ？

[snsins]

没有连接相应的LIB

[AladdinX]

__fmemcpy 这个东西要用到哪个lib ？我看的这个程序比较老，我在msdn里没有找到。

[lord_tyreal]

memcpy
Copies characters between buffers.

void *memcpy( void *dest, const void *src, size_t count );

Routine Required Header Compatibility
memcpy <memory.h> or <string.h> ANSI, Win 95, Win NT


For additional compatibility information, see Compatibility in the Introduction.

Libraries

LIBC.LIB Single thread static library, retail version
LIBCMT.LIB Multithread static library, retail version
MSVCRT.LIB Import library for MSVCRT.DLL, retail version


Return Value

memcpy returns the value of dest.

Parameters

dest

New buffer

src

Buffer to copy from

count

Number of characters to copy

Remarks

The memcpy function copies count bytes of src to dest. If the source and destination overlap, this function does not ensure that the original source bytes in the overlapping region are copied before being overwritten. Use memmove to handle overlapping regions.

Example

/* MEMCPY.C: Illustrate overlapping copy: memmove
* handles it correctly; memcpy does not.
*/

#include <memory.h>
#include <string.h>
#include <stdio.h>

char string1[60] = "The quick brown dog jumps over the lazy fox";
char string2[60] = "The quick brown fox jumps over the lazy dog";
/* 1 2 3 4 5
* 12345678901234567890123456789012345678901234567890
*/

void main( void )
{
printf( "Function:\tmemcpy without overlap\n" );
printf( "Source:\t\t%s\n", string1 + 40 );
printf( "Destination:\t%s\n", string1 + 16 );
memcpy( string1 + 16, string1 + 40, 3 );
printf( "Result:\t\t%s\n", string1 );
printf( "Length:\t\t%d characters\n\n", strlen( string1 ) );

/* Restore string1 to original contents */
memcpy( string1 + 16, string2 + 40, 3 );

printf( "Function:\tmemmove with overlap\n" );
printf( "Source:\t\t%s\n", string2 + 4 );
printf( "Destination:\t%s\n", string2 + 10 );
memmove( string2 + 10, string2 + 4, 40 );
printf( "Result:\t\t%s\n", string2 );
printf( "Length:\t\t%d characters\n\n", strlen( string2 ) );

printf( "Function:\tmemcpy with overlap\n" );
printf( "Source:\t\t%s\n", string1 + 4 );
printf( "Destination:\t%s\n", string1 + 10 );
memcpy( string1 + 10, string1 + 4, 40 );
printf( "Result:\t\t%s\n", string1 );
printf( "Length:\t\t%d characters\n\n", strlen( string1 ) );
}


Output

Function: memcpy without overlap
Source: fox
Destination: dog jumps over the lazy fox
Result: The quick brown fox jumps over the lazy fox
Length: 43 characters

Function: memmove with overlap
Source: quick brown fox jumps over the lazy dog
Destination: brown fox jumps over the lazy dog
Result: The quick quick brown fox jumps over the lazy dog
Length: 49 characters

Function: memcpy with overlap
Source: quick brown dog jumps over the lazy fox
Destination: brown dog jumps over the lazy fox
Result: The quick quick brown dog jumps over the lazy fox
Length: 49 characters


是不是着一个？

[lanfengjiyue]

如何给分：
管理，给分，添密码。ok
错误：
加个扩展C语句试试。

[AladdinX]

to 毒药：不是这个，你这个是讲memcpy，不是fmemcpy

to 歪脚鸭： 怎么加扩展c语句，能不能具体点？我的源文件都是c文件

[AladdinX]

up

[In355Hz]

include<WINDOWSX.H> 检查一下Proprocessor Definitions里有没有_WIN32