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±¾ÀýÊÇÏÈÓÉStringLen.h,StringLen.cÉú³Élibrak.a
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×îºóÀûÓÃStringLen3.h,StringLen3.cµ÷ÓÃlibrak2.a Éú³Élibrak3.so
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#StringLen.h:
#ifndef _STRINGLEN_H__
#define _STRINGLEN_H__
int Strlen(char *pStr);
#endif
#StringLen.c:
#include<stdio.h>
#include<assert.h>
#include "StringLen.h"
int Strlen(char *pStr)
{
unsigned long ulLength;
assert(NULL != pStr);
ulLength = 0;
while(*pStr++)
{
ulLength++;
}
return ulLength;
}
gcc -Wall -c *.c
ar rc librak.a *.o
------------------------------------------------------------------------------------
#StringLen2.h:
#ifndef _STRINGLEN_H2__
#define _STRINGLEN_H2__
#ifdef __UDT
#include "StringLen.h"
#endif
int Strlen2(char *pStr);
#endif
#StringLen2.c:
#include<stdio.h>
#include<assert.h>
#include "StringLen2.h"
int Strlen2(char *pStr)
{
unsigned long ulLength;
#ifdef __UDT
ulLength = Strlen(pStr);
#else
ulLength = -1;
#endif
return ulLength;
}
gcc -Wall -c *.c -D__UDT
ar rc librak2.a *.o
------------------------------------------------------------------------------------
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