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

char currentwd[BUFSIZ];
char longestwd[BUFSIZ];

int main(void)
{
	int ch, i;
	size_t curlen, lgstlen = 0;

	for (;;) {
		i = 0;
		printf(lgstlen > 0 ? "%s > " : "> ", longestwd);
		while ((ch = getchar()) == ' ' || ch == '\t');
		if (ch == EOF)
			break;
		if (ungetc(ch, stdin) == EOF) {
			fputs("input error", stderr);
			exit(1);
		}
		while ((ch = getchar()) != '\n' && ch != EOF) {
			if (ch == ' ' || ch == '\t') {
				while ((ch = getchar()) != '\n' && ch != EOF);
				break;
			}
			if (i < BUFSIZ - 1)
				currentwd[i++] = ch;
		}
		if (i > 0) {
			curlen = i;
			if (curlen > lgstlen) {
				strcpy(longestwd, currentwd);
				lgstlen = curlen;
			}
		}
	}
	putchar('\n');
	if (lgstlen)
		printf("Longest word was: %s (%zu)\n", longestwd, lgstlen);
	return 0;
}