From 94d0033ed89bb5bfb6500051296892fb7cea6c29 Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Mon, 25 Dec 2023 17:56:34 +0100
Subject: Small cleanup

---
 2023/04/4a.c | 13 +++++--------
 2023/04/4b.c | 12 +++++-------
 2 files changed, 10 insertions(+), 15 deletions(-)

(limited to '2023/04')

diff --git a/2023/04/4a.c b/2023/04/4a.c
index a1f6a9e..30b7b41 100644
--- a/2023/04/4a.c
+++ b/2023/04/4a.c
@@ -1,11 +1,8 @@
-#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
 
 #define N 1000
-
-bool isnum(char c) { return c >= '0' && c <= '9'; }
+#define ISNUM(c) (c >= '0' && c <= '9')
 
 int main() {
 	char *buf, line[N];
@@ -17,15 +14,15 @@ int main() {
 		while (*buf != ':') buf++;
 		while (*buf != '|') {
 			buf++;
-			if (!isnum(*buf)) continue;
+			if (!ISNUM(*buf)) continue;
 			w[nw++] = atoi(buf);
-			while (isnum(*buf)) buf++;
+			while (ISNUM(*buf)) buf++;
 		}
 		while (*buf != '\n') {
 			buf++;
-			if (!isnum(*buf)) continue;
+			if (!ISNUM(*buf)) continue;
 			r[nr++] = atoi(buf);
-			while (isnum(*buf)) buf++;
+			while (ISNUM(*buf)) buf++;
 		}
 		for (x = 0, i = 0; i < nr; i++) {
 			for (j = 0; j < nw; j++) {
diff --git a/2023/04/4b.c b/2023/04/4b.c
index c122f8b..4529ff7 100644
--- a/2023/04/4b.c
+++ b/2023/04/4b.c
@@ -1,11 +1,9 @@
-#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #define N 1000
-
-bool isnum(char c) { return c >= '0' && c <= '9'; }
+#define ISNUM(c) (c >= '0' && c <= '9')
 
 int main() {
 	char *buf, line[N];
@@ -19,15 +17,15 @@ int main() {
 		while (*buf != ':') buf++;
 		while (*buf != '|') {
 			buf++;
-			if (!isnum(*buf)) continue;
+			if (!ISNUM(*buf)) continue;
 			w[nw++] = atoi(buf);
-			while (isnum(*buf)) buf++;
+			while (ISNUM(*buf)) buf++;
 		}
 		while (*buf != '\n') {
 			buf++;
-			if (!isnum(*buf)) continue;
+			if (!ISNUM(*buf)) continue;
 			r[nr++] = atoi(buf);
-			while (isnum(*buf)) buf++;
+			while (ISNUM(*buf)) buf++;
 		}
 		for (x = 0, i = 0; i < nr; i++) {
 			for (j = 0; j < nw; j++) {
-- 
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