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Turbo C 2.0、Borland C++库函数及用例(24) copy routine can't be used since it assumes the
pointer size is near.
*/
movedata(FP_SEG(str), FP_OFF(str),
FP_SEG(fptr), FP_OFF(fptr),
strlen(str)); /* display string (note the F modifier) */
printf("Far string is: %Fs\n", fptr); /* free the memory */
farfree(fptr); return 0;
}
函数名: farmalloc
功 能: 从远堆中分配存储块
用 法: void far *farmalloc(unsigned long size);
程序例:#include <stdio.h>
#include <alloc.h>
#include <string.h>
#include <dos.h>int main(void)
{
char far *fptr;
char *str = "Hello"; /* allocate memory for the far pointer */
fptr = farmalloc(10); /* copy "Hello" into allocated memory */
/*
Note: movedata is used because we might
be in a small data model, in which case
a normal string copy routine can not be
used since it assumes the pointer size
is near.
*/
movedata(FP_SEG(str), FP_OFF(str),
FP_SEG(fptr), FP_OFF(fptr),
strlen(str)); /* display string (note the F modifier) */
printf("Far string is: %Fs\n", fptr); /* free the memory */
farfree(fptr); return 0;
}
函数名: farrealloc
功 能: 调整远堆中的分配块
用 法: void far *farrealloc( void far *block,
unsigned long newsize );
程序例:#include <stdio.h>
#include <alloc.h>int main(void)
{
char far *fptr; fptr = farmalloc(10); printf("First address: %Fp\n", fptr);
fptr = farrealloc(fptr,20);
printf("New address : %Fp\n", fptr);
farfree(fptr);
return 0;
}
函数名: fclose
功 能: 关闭一个流
用 法: int fclose(FILE *stream);
程序例:#include <string.h>
#include <stdio.h>int main(void)
{
FILE *fp;
char buf[11] = "0123456789"; /* create a file containing 10 bytes */ fp = fopen("DUMMY.FIL", "w");
fwrite(&buf, strlen(buf), 1, fp); /* close the file */
fclose(fp);
return 0;
}
函数名: fcloseall
功 能: 关闭打开流
用 法: int fcloseall(void);
程序例:#include <stdio.h>int main(void)
{
int streams_closed; /* open two streams */
fopen("DUMMY.ONE", "w");
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