51单片机printf格式化输出参数详解

先上标准例程

#include 

void tst_printf (void)  {
  char a;
  int  b;
  long c;
  unsigned char x;
  unsigned int  y;
  unsigned long z;
  float f,g;
  char buf [] = "Test String";
  char *p = buf;

  a = 1;
  b = 12365;
  c = 0x7FFFFFFF;
  x = 'A';
  y = 54321;
  z = 0x4A6F6E00;
  f = 10.0;
  g = 22.95;

  printf ("char %bd  int %d  long %ldn",a,b,c);
  printf ("Uchar %bu Uint %u Ulong %lun",x,y,z);
  printf ("xchar %bx xint %x xlong %lxn",x,y,z);
  printf ("String %s is at address %pn",buf,p);
  printf ("%f != %gn", f, g);
  printf ("%*f != %*gn", 8, f, 8, g);
}

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2022年7月20日