program using serial port to carry out a dialogue between two computers

[acsmtl]

Hello all

I am the new member and I just learn C programming. So, is there any body can help me writing C program in Ubuntu.

Here is description.

Write programs using the serial port to carry out a dialogue between two computers 1. the computers alternate in sending data 2. exit with ctrlC
Thanks

[ssharish2005]

You will never get any help, if you’re after for someone to write a code for you. You need be smart in asking question, instead of just dumping a bunch of source files. Ask us question which are more specific in nature, such as why the particular statement doesn’t work as intended or of anything of that nature; instead of why this doesn’t work.

Now what exactly are you having problems with that code?

The code you have attached should work on Ubuntu, why do you it doesn’t?

ssharish

[Salem]

Carry on reading the tutorial you copy/pasted the code from -> Serial Programming Guide for POSIX Operating Systems

Though it would be useful if you learnt some programming skills along the way.
open_port() returned an int (file descriptor), so use it.

int main ( ) {
  int fd = open_port();
  if ( fd != -1 ) {
      int res;
      char buf[256];

      res = read(fd,buf,255);
      printf("res=%d\n",res);
      if ( res > 0 ) {
            buf[res]=0;             /* set end of string, so we can printf */
            printf(":%s:%d\n", buf, res);
      }
  }
}

Don't just dump all the functionality into the first bit of code you find.