2 files changed, 14 insertions, 32 deletions

diff --git a/2023/03/3a.c b/2023/03/3a.c
index 13c8c8d..1d07a8e 100644
--- a/2023/03/3a.c
+++ b/2023/03/3a.c
@@ -1,30 +1,23 @@
-#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #define N 1000
-
-bool isnum(char c) { return c >= '0' && c <= '9'; }
-bool issymbol(char c) { return c != '.' && c != 0 && c != '\n' && !isnum(c); }
+#define ISNUM(c) (c >= '0' && c <= '9')
+#define ISSYM(c) (c != '.' && c != 0 && c != '\n' && !ISNUM(c))
 
 int grab(char *buf) {
-        int x;
-
-        if (!isnum(*buf))
-                return 0;
-
-        while (isnum(*buf)) buf--;
+        if (!ISNUM(*buf)) return 0;
+        while (ISNUM(*buf)) buf--;
         buf++;
-        x = atoi(buf);
-        while (isnum(*buf)) *buf++ = '.';
+        int x = atoi(buf);
+        while (ISNUM(*buf)) *buf++ = '.';
 
         return x;
 }
 
 int main() {
         char line[N], prev[N];
-        bool l, c, r, ul, uc, ur;
         int i, sum;
 
         sum = 0;
@@ -32,15 +25,10 @@ int main() {
         memset(prev, '.', N);
         while (fgets(&line[1], N-1, stdin) != NULL) {
                 for (i = 1; line[i]; i++) {
-                        l = issymbol(line[i-1]);
-                        c = issymbol(line[i]);
-                        r = issymbol(line[i+1]);
-                        ul = issymbol(prev[i-1]);
-                        uc = issymbol(prev[i]);
-                        ur = issymbol(prev[i+1]);
-                        if (l || r || ul || uc || ur)
+                        if (ISSYM(line[i-1]) || ISSYM(line[i+1]) ||
+                            ISSYM(prev[i-1]) || ISSYM(prev[i]) || ISSYM(prev[i+1]))
                                 sum += grab(&line[i]);
-                        if (l || c || r)
+                        if (ISSYM(line[i-1]) || ISSYM(line[i]) || ISSYM(line[i+1]))
                                 sum += grab(&prev[i]);
                 }
                 memcpy(prev, line, N);
diff --git a/2023/03/3b.c b/2023/03/3b.c
index 27b5b7c..9bf4c27 100644
--- a/2023/03/3b.c
+++ b/2023/03/3b.c
@@ -1,22 +1,16 @@
-#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 grab(char *buf) {
-        int x;
-
-        if (!isnum(*buf))
-                return 0;
-
-        while (isnum(*buf)) buf--;
+        if (!ISNUM(*buf)) return 0;
+        while (ISNUM(*buf)) buf--;
         buf++;
-        x = atoi(buf);
-        while (isnum(*buf)) *buf++ = '.';
+        int x = atoi(buf);
+        while (ISNUM(*buf)) *buf++ = '.';
 
         return x;
 }