#define的一个小技巧

/* atof example: sine calculator */
#include <stdio.h>      /* printf, fgets */
#include <stdlib.h>     /* atof */
#include <math.h>       /* sin */



#define vfd_com_timeout_clear()     do{vfd_com_cnt = 0;}while(0)
#define vfd_com_timeout_recount()   do{vfd_com_cnt = 0;}while(0)

/*
判断等待时间是否超时
*/
int is_eload_com_timeout(void)
{
    //电子负载超过2s时间尚未反馈
    if (1)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}


int main ()
{
    double n, m;
    double pi = 3.1415926535;
    char buffer[256] = {"000000.01212\n234"};

    int vfd_com_cnt = 5;
    printf("vfd_com_cnt = %d\n",vfd_com_cnt);
    vfd_com_timeout_clear();
    printf("vfd_com_cnt = %d\n",vfd_com_cnt);

    if (!is_eload_com_timeout())
    {
		printf("oooo\n");
    }
	else
	{
		printf("kkkkk\n");
	}
	

    n = atof (buffer);
    printf("n=%f\n", n);
    m = sin (n * pi / 180);
    printf ("The sine of %f degrees is %f\n", n, m);
    return 0;
}

int is_eload_com_timeout(void)
{

    if (1)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}


int main ()
{
    double n, m;
    double pi = 3.1415926535;
    char buffer[256] = {"000000.01212\n234"};

    int vfd_com_cnt = 5;
    printf("vfd_com_cnt = %d\n",vfd_com_cnt);
    do{vfd_com_cnt = 0;}while(0);
    printf("vfd_com_cnt = %d\n",vfd_com_cnt);

    if (!is_eload_com_timeout())
    {
  printf("oooo\n");
    }
 else
 {
  printf("kkkkk\n");
 }


    n = atof (buffer);
    printf("n=%f\n", n);
    m = sin (n * pi / 180);
    printf ("The sine of %f degrees is %f\n", n, m);
    return 0;
}