Daily Programmer #193 Easy

main.c

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

static struct {
	const char *acronym;
	const char *expansion;
} pairs[] = {
	{"lol", "laugh out loud"},
	{"dw", "don't worry"},
	{"hf", "have fun"},
	{"gg", "good game"},
	{"brb", "be right back"},
	{"g2g", "got to go"},
	{"wtf", "what the fuck"},
	{"wp", "well played"},
	{"gl", "good luck"},
	{"imo", "in my opinion"},
};

static void print_expansion(const char *word)
{
	int i;

	for (i = 0; i < sizeof(pairs) / sizeof(pairs[0]); ++i) {
		if (!strcmp(word, pairs[i].acronym)) {
			printf("%s", pairs[i].expansion);
			return;
		}
	}

	printf("%s", word);
}

int main(void)
{
	/* Should be long enough for most words. */
	char word[64];
	char *wptr = word;
	char ch;

	while (!feof(stdin)) {
		ch = getc(stdin);
		if (isalpha(ch)) {
			*wptr++ = ch;
			if (wptr >= word + 64) {
				fprintf(stderr, "word longer than 64 chars.\n");
				return -1;
			}
		} else {
			*wptr = '\0';
			print_expansion(word);
			wptr = word;
			putc(ch, stdout);
		}
	}
	*wptr = '\0';
	print_expansion(word);
	return 0;
}