jdp@localhost ~/src/src $ cat string.c
//malloc()
#include <stdlib.h>
#include <stdio.h>
#include "string.h"
//memcpy()
#include <string.h>

// tc = token count
//      assumes token seperator to be ASCII 32(" ")
int tc(char s[])
{
 int x = strlen(s), a, i=0;
 for(a=0; a<=x; ++a)
 {
  if (s[a] == 32) ++i;
 }
return i+1;
}
// token get
//// assumes token seperator to be ASCII 32(" ") and returns n token
int *tg(char s[], int n)
{
 int x = strlen(s), a, i=0, l=0;
 s[x] = 32;
 ++x;
 for (a=0;a<=x;++a)
 {
  if (s[a] == 32)
  {
   //++i;
   if (n==++i)
   {
    return ss(s,l,a-1);
   }else{
    l = a+1;
   }
  }//if space
 }// for
 return 0;
}
// substring
//// string, start, end
int *ss(char s[], int a, int b)
{
 return memcpy(malloc(b-a), &s[a], (b-a)+1);
}