/*
 * Some C-idioms on how-to do common operations
 *
 * I used strspn, strcpn, and strncpy from the library
 * You could "role your own" for those, if you want to get
 * more experience with pointer.
 */


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

#define MAXWORD 80
#define MAXLINE 20

char * myStrCpy(char * src, int size);

int main(int argc, char **argv) {

	/* allocating a 2-dimensional array of strings. */


	char **myargv;
	char ibuf[MAXWORD];
	char *p;
	int size, i=0;

	if ((myargv = (char **) malloc(MAXLINE * sizeof(char *))) == NULL) {
			printf("Error allocing the myargv array\n");
			exit(-1);
	}

	while (p = fgets(ibuf, MAXWORD, stdin)) {
		/* parse the line, assume blank or tab as word separator */
		while (*p ) {
			p += strspn(p, " \t");		/* skip whitspace */
			size = strcspn(p, " \t");	/* size of the word */
			myargv[i++] = myStrCpy(p, size);	/* copy the word */
			p+=size;
		}
	}
	myargv[i] = NULL;
	i = 0;
	while (myargv[i]) {
		printf("string %d: %s\n", i, myargv[i++]);
	}

}

char * myStrCpy(char * src, int size) {
		char *p;
		if ((p = malloc(size+1)) == NULL) {
			printf("Error allocing the string array \n");
			exit(-2);
		}
		strncpy(p, src, size);
		*(p+size) = '\0';
		return p;
}