advent2023

commit 431701cd9d7f15d78230f18a6fef25ee7925f66a
parent a1e926bfc9174e904d5aedcf2fe7e32a8c25514a
Author: bsandro <email@bsandro.tech>
Date:   Sun,  3 Dec 2023 13:53:55 +0200

day 03 p1 aka my first 'can't believe I've missed that'

Diffstat:
M
day03/puzzle.c
 | 
20
+++++++++-----------

1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/day03/puzzle.c b/day03/puzzle.c
@@ -21,20 +21,17 @@ bool is_digit(char b) {
 }
 
 bool check_part(int x, int y, const char field[FIELD_SIZE][FIELD_SIZE]) {
-	//printf("check %d:%d:\n", x, y);
 	for (int dy=-1; dy<=1; ++dy) {
 		for (int dx=-1; dx<=1; ++dx) {
 			int dy1=y+dy;
 			int dx1=x+dx;
 			if (dy1>=0 && dy1<FIELD_SIZE && dx1>=0 && dx1<FIELD_SIZE) {
 				if (!is_digit(field[dy1][dx1]) && field[dy1][dx1]!='.') {
-					printf("%d:%d:checking %d:%d (%c)\n", x, y, dx1, dy1, field[dy1][dx1]);
 					return true;
 				}
 			}
 		}
 	}
-	//printf("\n-------------------------------\n");
 	return false;
 }
 
@@ -46,7 +43,6 @@ void puzzle(const char *filename, long long *result1, long long *result2) {
 	}
 
 	char field[FIELD_SIZE][FIELD_SIZE] = {0};
-	(void)field;
 	char buf[STR_LEN] = {0};
 	unsigned int line_num = 0;
 
@@ -54,8 +50,7 @@ void puzzle(const char *filename, long long *result1, long long *result2) {
 	*result2 = 0;
 
 	while (fgets(buf, STR_LEN, infile) != NULL) {
-		int len = strlen(buf);
-		for (int i=0; i<len; ++i) {
+		for (int i=0; i<FIELD_SIZE; ++i) {
 			field[line_num][i] = buf[i];
 		}
 		++line_num;
@@ -71,12 +66,15 @@ void puzzle(const char *filename, long long *result1, long long *result2) {
 			int digit = 0;
 			bool is_part = false;
 			while (is_digit(field[y][x++])) {
-				//printf("%c", field[y][x-1]);
-				if (!is_part) is_part = check_part(x-1, y, field);
-				digit = digit*10 + field[y][x-1] - '0';
+				int cx = x-1;
+				if (cx>=FIELD_SIZE) break; // too lazy to make it sane
+				if (!is_part) is_part = check_part(cx, y, field);
+				digit = digit*10 + field[y][cx] - '0';
+			}
+			if (digit>0 && is_part) {
+				//printf("%d\n", digit);
+				*result1 += digit;
 			}
-			if (digit>0) printf("%d(%d)\n", digit, is_part);
-			if (digit>0 && is_part) *result1 += digit;
 		}
 	}
 }