msg.c

一个C语言编写的串口程序

#include <stdio.h>
#include <stdlib.h>
#include <varargs.h>

extern char MsgLog[50];

int  ShowMsg(va_alist)
{
  FILE *fp;
  char *fmt;
  va_list args;

  fp=fopen(MsgLog,"a+");
  if (fp==NULL) {printf("Open MsgLog Failed!\n");return;}
  
  va_start(args);
  fmt=va_arg(args,char *);
  fprintf(fp,"[%s %d]\n",GetFmtTime(),getpid());
  (void)vfprintf(fp,fmt,args);
  va_end(args);
  fclose(fp);
}

int LookChar(char *buf,int len)
{
  FILE *fp;
  int i;
  fp=fopen("/tmp/buf.log","a+");
  fprintf(fp,"[%s %d]\n",GetFmtTime(),getpid());
  for(i=0;i<len;i++) fputc(buf[i],fp);
  fputc('\n',fp);
  fclose(fp);
}

int LooKChar(char *buf,int len)
{
  FILE *fp;
  int i;
  fp=fopen(MsgLog,"a+");
  fprintf(fp,"[%s %d]\n",GetFmtTime(),getpid());
  for(i=0;i<len;i++) fputc(buf[i],fp);
  fputc('\n',fp);
  fclose(fp);
}

int ShowId(char *program)
{
  ShowMsg("pid=%d program=%s ppid=%d\n",getpid(),program,getppid());
}
#define ShowID() ShowId(argv[0])