setdta用来设置磁盘传输区地址。
基本信息
函数名: setdta
功 能: 设置磁盘传输区地址
用 法: void setdta(char far *dta);
程序例子
#include
#include
int main(void)
{
char line[80], far *save_dta;
struct fcb blk;
int result;
/* get new file name from user */
gets(line);
/* parse the new file name to the dta */
/* request DOS services to create file */
if (
bdosptr(0x16, &blk, 0) == -1)
{
exit(1);
}
/* save old dta and set new dta */
setdta(buffer);
/* write new records */
blk.fcb_recsize = 256;
blk.fcb_random = 0L;
result = randbwr(&blk, 1);
if (!result)
else
{
exit(1);
}
/* request DOS services to close the file */
if (
bdosptr(0x10, &blk, 0) == -1)
{
exit(1);
}
/* reset the old dta */
setdta(save_dta);
return 0;
}