/* echofirstword.c 
 *   Neal Nelson 2009.10.02
 *
 * Echo first word of a line and strip leading spaces.
 * Overwrite the buffer provided by the caller.
 *
 */

#include <stdio.h>

#define MAXLINE 80

main()
{ char buf[MAXLINE];

  while (fgets(buf, MAXLINE, stdin) != NULL )
  { getArg(buf);
    printf ("%s\n", buf);
  }
}

getArg(char *buf)
{ char* p;

  for (p = buf; isspace(*p); p++);             /* skip leading spaces */
  for ( ; !isspace(*p) && *p != '\0'; p++)     /* get first word */
  { *buf++ = *p;
  }
  *buf = '\0';
}