advent2025

commit 04e621e3fde91ff77b402949353d6e62f8b2d9c7
parent 997db06eef33167856f71b0385f103c10e1ad15d
Author: bsandro <email@bsandro.tech>
Date:   Fri, 12 Dec 2025 10:54:23 +0200

day10 parse joltages

Diffstat:
M
day10.c
 | 
45
+++++++++++++++++++++++++++++----------------

1 file changed, 29 insertions(+), 16 deletions(-)
diff --git a/day10.c b/day10.c
@@ -6,9 +6,9 @@
 
 #define BUF_SIZE 256
 
-int btoi(int bufl, int buf[bufl]) {
+int btoi(int bufl, char buf[bufl]) {
     int num = 0;
-    for (int i=0;i<bufl;++i) num = num*10+buf[i];
+    for (int i=0;i<bufl;++i) num = num*10+(buf[i]-'0');
     return num;
 }
 
@@ -23,23 +23,27 @@ typedef struct {
     bool lights1[16];//overall value that we can change
     int buttons_l;
     Button buttons[16];
-    int joltajes_l;
+    int joltages_l;
     int joltages[16]; // same number as lights
 } Machine;
 
-void m_lights_add(Machine *m, int buf_l, char buf[buf_l]) {
-    for (int i=0;i<buf_l;++i) {
+void m_lights_add(Machine *m, int bufl, char buf[bufl]) {
+    for (int i=0;i<bufl;++i) {
         m->lights[m->lights_l++] = buf[i]=='#';
     }
 }
 
-void m_button_add(Machine *m, int buf_l, char buf[buf_l]) {
+void m_button_add(Machine *m, int bufl, char buf[bufl]) {
     Button *btn = &m->buttons[m->buttons_l++];
-    for (int i=0;i<buf_l;++i) {
+    for (int i=0;i<bufl;++i) {
         btn->toggles[btn->toggles_l++] = buf[i]-'0';
     }
 }
 
+void m_joltage_add(Machine *m, int jolt) {
+    m->joltages[m->joltages_l++] = jolt;
+}
+
 bool m_lights_on(Machine *m) {
     for (int i=0;i<m->lights_l;++i) {
         if (m->lights[i]!=m->lights1[i]) return false;
@@ -54,8 +58,10 @@ void m_light_toggle(Machine *m, int light) {
 
 void m_print(Machine *m) {
     printf("(%zu) Lights:  [", sizeof(Machine));
-    for (int i=0;i<m->lights_l;++i) printf("%c", m->lights[i]?'#':'.');
-    printf("]\n");
+    for (int i=0;i<m->lights_l;++i) putchar(m->lights[i]?'#':'.');
+    printf("] Joltages:");
+    for (int i=0;i<m->joltages_l;++i) printf(" %d", m->joltages[i]);
+    putchar('\n');
 }
 
 void m_btn_press(Machine *m, int b) {
@@ -107,20 +113,27 @@ int main(void) {
     Machine machines[180] = {0};
     int machines_l = 0;
     char buf[BUF_SIZE] = {0};
-    int buf_l = 0;
+    int bufl = 0;
+    bool parse_joltages = false;
     for (int c=getchar();c!=EOF;c=getchar()) {
         if (c==']') {
-            m_lights_add(&machines[machines_l], buf_l, buf);
-            buf_l = 0;
+            m_lights_add(&machines[machines_l], bufl, buf);
+            bufl = 0;
         }
         else if (c==')') {
-            m_button_add(&machines[machines_l], buf_l, buf);
-            buf_l = 0;
+            m_button_add(&machines[machines_l], bufl, buf);
+            bufl = 0;
         }
-        else if ((c>='0'&&c<='9')||c=='.'||c=='#') buf[buf_l++] = c;
+        else if ((c>='0'&&c<='9')||c=='.'||c=='#') buf[bufl++] = c;
         else if (c=='\n') {
             machines_l++;
-            buf_l = 0;
+            bufl = 0;
+            parse_joltages = false;
+        } else if (c=='{') parse_joltages = true;
+        else if (parse_joltages&&(c==','||c=='}')) {
+            int jolt = btoi(bufl, buf);
+            m_joltage_add(&machines[machines_l], jolt);
+            bufl = 0;
         }
     }
     int64_t part1 = 0;