[mirrors/Programs.git] / c / pia.c

#include <stdio.h>
#include <math.h>
#include <time.h>
#define PI 3.141592653589793
#include <termios.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <unistd.h>

int main(void) {
  //get size of terminal
  int lines = 20;
  int cols = 20;
  /*FILE *p;
  p = popen("stty size", "r");
  fscanf(p, "%d %d", &lines, &cols);
  close((int)p);*/
  struct winsize ws;
  if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
    ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
    ioctl(STDIN_FILENO,  TIOCGWINSZ, &ws) == -1) ||
    ws.ws_col == 0) {
      lines = 25;
      cols = 80;
  } else {
    lines = ws.ws_row;
    cols = ws.ws_col;
  }

	char *format;
	asprintf(&format,"%%0.%dlf\r",cols-2);


  double pi=0, i=1;

	while(1) {
		printf(format, pi);
		pi+=(4/i);
		i+=2;
		pi-=(4/i);
		i+=2;
	}
  //system("PAUSE");
  //return EXIT_SUCCESS;
}
Commit	Line	Data
24306072 H	1	#include <stdio.h>
	2	#include <math.h>
	3	#include <time.h>
	4	#define PI 3.141592653589793
	5	#include <termios.h>
	6	#include <sys/ioctl.h>
	7	#include <stdlib.h>
	8	#include <unistd.h>
	9
	10	int main(void) {
	11	//get size of terminal
	12	int lines = 20;
	13	int cols = 20;
	14	/FILE p;
	15	p = popen("stty size", "r");
	16	fscanf(p, "%d %d", &lines, &cols);
	17	close((int)p);*/
	18	struct winsize ws;
	19	if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
	20	ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
	21	ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) \|\|
	22	ws.ws_col == 0) {
	23	lines = 25;
	24	cols = 80;
	25	} else {
	26	lines = ws.ws_row;
	27	cols = ws.ws_col;
	28	}
	29
	30	char *format;
	31	asprintf(&format,"%%0.%dlf\r",cols-2);
	32
	33
	34	double pi=0, i=1;
	35
	36	while(1) {
	37	printf(format, pi);
	38	pi+=(4/i);
	39	i+=2;
	40	pi-=(4/i);
	41	i+=2;
	42	}
	43	//system("PAUSE");
	44	//return EXIT_SUCCESS;
	45	}