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Turbo C 2.0、Borland C++库函数及用例(1)
Turbo C 2.0、Borland C++库函数及用例 字母Ａ开头函数函数名: abort
功 能: 异常终止一个进程
用 法: void abort(void);
程序例:
#include <stdio.h>
#include <stdlib.h>int main(void)
{
printf("Calling abort()\n");
abort();
return 0; /* This is never reached */
}
函数名: abs
功 能: 求整数的绝对值
用 法: int abs(int i);
程序例:
#include <stdio.h>
#include <math.h>int main(void)
{
int number = -1234; printf("number:%d absolute value:%d\n",number,abs(number));
return 0;
}
函数名: absread
功 能: 绝对磁盘扇区读数据
用 法: int absread( int drive, int nsects, int sectno,
void *buffer );
程序例:
/* absread example */
#include <stdio.h>
#include <conio.h>
#include <process.h>
#include <dos.h>int main(void)
{
int i, strt, ch_out, sector;
char buf[512]; printf("Insert diskette into drive A press any key\n");
getch();
sector = 0;
if (absread(0, 1, sector, &buf) != 0)
{ perror("Disk problem");
exit(1); }
printf("Read OK\n");
strt = 3;
for (i=0; i<80; i++)
{ ch_out = buf[strt+i];
putchar(ch_out); }
printf("\n");
return(0); }
函数名: abswrite
功 能: 绝对磁盘扇区写数据
用 法: int abswrite( int drive, int nsects, in tsectno,
void *buffer);
程序例:
/* abswrite example */
#include <stdio.h>
#include <conio.h>
#include <process.h>
#include <dos.h>int main(void)
{ int i, strt, ch_out, sector;
char buf[512]; printf("Insert diskette into drive A press any key\n");
getch();
sector = 0;
if (absread(0, 1, sector, &buf) != 0)
{ perror("Disk problem");
exit(1); }
printf("Read OK\n");
strt = 3;
for (i=0; i<80; i++)
{ ch_out = buf[strt+i];
putchar(ch_out); }
printf("\n");
return(0);}
函数名: Access
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