学到了不少

试下这个：

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

#define Dmalloc    malloc
#define Drealloc realloc
#define Dfree free
#define FS_Open(name, oflag)             fopen(name, oflag)
#define FS_Close(fp)                     fclose(fp)
#define FS_Seek(fp, offset, whence)     fseek(fp, offset, whence)
#define FS_Tell(fp)                     ftell(fp)
#define FS_Read(ptr, size, nitem, fp)     fread(ptr, size, nitem, fp)
#define FS_Write(ptr, size, nitem, fp)     fwrite(ptr, size, nitem, fp)


void main(void)
{
    FILE *stream,*stream2;
    char *sfilepath="d:\\mcutest\\tc\\fu\\file3.txt";
    char *dfilepath="d:\\mcutest\\tc\\fu\\file4.txt";
    char *chrTarget,*chrSource;
    char *chrbegin;
    int inifilesize,intnumread,intpos,intsum,intTemp1,intTemp2;

   
    if( (stream = FS_Open( sfilepath, "r+b" )) == NULL )
    {
      printf( "The file 'test.txt' was not opened or not exist!\n" );
    }
   else
   {
       if (FS_Seek(stream, 0, SEEK_END)!= 0) //move the file point the end of file
        {
            printf( "move the file point to the end of file failed!\n" );
        }
        inifilesize=FS_Tell(stream);//get current file size
        if (FS_Seek(stream, 0, SEEK_SET)!= 0) //move the file point to the begin of file again
        {
            printf( "move the file point to the begin of file failed!\n" );
        }
        chrSource=(char*)Dmalloc(inifilesize);
        if( NULL==chrSource )
        {
            printf( "Insufficient memory available\n" );
        }
        intnumread = FS_Read( chrSource, sizeof( char ), inifilesize, stream );//get file stream
        chrbegin=chrSource;
        
        chrTarget=(char*)Dmalloc(inifilesize);
        if( NULL==chrTarget )
        {
            printf( "Insufficient memory available\n" );
        }
        printf("******************************************************************************\n");
        printf("The contents of test.txt is showed as below:\n%s\n", chrSource );

        intsum=0;
        for (intTemp1=0;intTemp1<inifilesize;intTemp1++)
        {
            intpos=strcspn(chrbegin,"mA");
            for (intTemp2=0;intTemp2<intpos;intTemp2++)
            {
                if (chrbegin-chrSource>=inifilesize)
                    break;
                *(chrTarget+intsum)=*chrbegin;
                chrbegin++;
               
                intsum++;
            }
            if (chrbegin-chrSource>=inifilesize)
                break;
            else
                chrbegin+=strlen("mA");
        }
        *(chrTarget+intsum)=0;
        printf("%s ",chrTarget);

        if( (stream2 = FS_Open( dfilepath, "a" )) == NULL )
        {
            printf( "The file 'test.txt' was not opened or not exist!\n" );
        }
        intnumread = FS_Write( chrTarget, sizeof( char ), strlen(chrTarget), stream2 );
        printf("the number of characters had been writeen is:%d",intnumread);
   }
   Dfree(chrSource);
   Dfree(chrTarget);
   FS_Close(stream);
   FS_Close(stream2);
}

LS的代码可谓之Vx的“百花齐放”了~~不过，给库函数做宏的确不是个好主意，要么你就写shell-function用来调试，要么你根本就直接使用库函数，这么做不是很浪费么？？