m

2015_day_6/Makefile

@@ -0,0 +1,5 @@
+compile:
+	gcc day_6.c -Werror=switch -o day6 -march=native -Ofast -flto
+
+run:
+	./day6

2015_day_6/day_6.c

@@ -0,0 +1,121 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+FILE *fptr;
+
+struct __attribute__((packed)) {
+    unsigned int w0 : 1;
+    unsigned int w1 : 1;
+    unsigned int w2 : 1;
+    unsigned int w3 : 1;
+    unsigned int w4 : 1;
+    unsigned int f0 : 1;
+} bitfield;
+
+typedef struct lightarray {
+  int8_t **lights;
+  int rows_of_lights;
+  int columns_of_lights;
+  //int number·of·houses;
+  //int x·coord;
+  //int y·coord;
+  //int x·coord·bot;
+  //int y·coord·bot;
+  //int x_coord_origin;
+  //int y_coord_origin;
+  //int seq·no;
+} __attribute__((packed)) Lightarray;
+
+
+//initial array allocation
+Lightarray *initlightarray(){
+  Lightarray* f = (Lightarray*)malloc(sizeof(Lightarray));
+  if (f == NULL) return NULL;
+
+  f->rows_of_lights = 1000;
+  f->columns_of_lights = 1000;
+
+  f->lights = (int8_t**)malloc(f->rows_of_lights * sizeof(int8_t*));//allocating the rows
+  if (f->lights == NULL) {
+    free(f);
+    return NULL; //handling if there isn't enough memory to allocate or allocation fails
+  }
+  f->lights[0] = (int8_t*)malloc(f->columns_of_lights * sizeof(int8_t));
+  if (f->lights[0] == NULL){
+    free(f->lights);
+    free(f);
+    return NULL;
+  }
+  return f;
+}
+
+
+
+
+int main(){
+    char compare_1[35];
+    char compare_2[35];
+    int pos_1;
+    int pos_2;
+
+    fptr = fopen("input", "r");  
+    if(fptr == NULL) {
+        printf("Not able to open the file.");
+        return 1;
+        }
+    Lightarray* my_light_array = initlightarray(0);
+    if (my_light_array == NULL){
+        fprintf(stderr, "ERROR:initialisation of struct failed\n");
+        return 1;
+        }
+    char buffer[266];
+    while (fgets(buffer, sizeof(buffer), fptr)) {
+        bitfield.w0 = 0;
+        bitfield.w1 = 0;
+        bitfield.w2 = 0;
+        bitfield.w3 = 0;
+        bitfield.w4 = 0;
+        bitfield.f0 = 0;
+        sprintf(compare_1,"%.4s", buffer);
+        sprintf(compare_2,"%.3s", buffer + 5);
+        printf("%s\n\n",buffer);
+        printf("%s\n",compare_2);
+
+        if (strcmp(compare_1,"turn")){
+            bitfield.w0 = 1;
+            printf("turn found\n");
+        }else{
+            bitfield.w1 =1;
+            printf("toggle found\n");
+        }
+
+        if (bitfield.w0 == 1 && strcmp(compare_2,"on")){
+            bitfield.w2 = 1;
+        } else if (bitfield.w0 == 1 && strcmp(compare_2,"off")){
+            bitfield.w3 = 1;
+        }
+        
+
+        //scrape section
+        pos_1 = strcspn(buffer,"123456789");
+        pos_2 = strcspn(buffer,",");
+        //pos_1 to pos_2 is the length of the first number
+
+
+
+
+
+
+
+
+
+
+    }
+
+
+
+
+
+
+
+}