tsscanf.c

来自「单片及c语言轻松入门的随书光盘」· C语言 代码 · 共 43 行

#include <reg52.h>
#include <stdio.h>

void tst_sscanf (void)  {
  char a;
  int  b;
  long c;

  unsigned char x;
  unsigned int  y;
  unsigned long z;

  float f,g;

  char d, buf [10];

  int argsread;

  printf ("Reading a signed byte, int,and long\n");
  argsread = sscanf ("1 -234 567890", "%bd %d %ld", &a, &b, &c);
  printf ("%d arguments read\n", argsread);

  printf ("Reading an unsigned byte, int, and long\n");
  argsread = sscanf ("2 44 98765432", "%bu %u %lu", &x, &y, &z);
  printf ("%d arguments read\n", argsread);

  printf ("Reading a character and a string\n");
  argsread = sscanf ("a abcdefg", "%c %9s", &d, buf);
  printf ("%d arguments read\n", argsread);

  printf ("Reading two floating-point numbers\n");
  argsread = sscanf ("12.5 25.0", "%f %f", &f, &g);
  printf ("%d arguments read\n", argsread);
}
void main()
{	SCON  = 0x50;    /*SCON:工作模式1，8-bit UART，允许接收*/
	TMOD |= 0x20;    /*TMOD：定时器T1，工作模式2, 8位自动重载方式*/
	TH1   = 0xf3;    /*当波特率为2400时，定时器初值*/
	TR1   = 1;       /*定时器T1开始运行*/
	TI    = 1;       /*允许发送数据*/
	for(;;)
		tst_sscanf();
}