/* echofirstword.c 
 *   Neal Nelson 2009.10.02
 *
 * Echo first word of a line and strip leading spaces.
 * Allocate and return a new string.
 * Use strspn to skip leading spaces.
 *
 */

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

#define MAXLINE 80

/* Don't forget prototypes */
char *getArg(char *buf);

main()
{ char buf[MAXLINE];
  char *p;

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

char *getArg(char *buf)
{ char *p,*q;
  int len;
  char ws[] = " \n\t\r\f\v";

  p = buf + strspn(buf,ws);
  len = strcspn(p,ws);
  q = (char *)malloc(len+1);
  strncpy(q, p, len);
  *(q+len) = '\0';
  return q;
}