init

2022/day4/p2/day4p2.c

@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+
+bool Overlap(int * Ranges[4])
+{
+
+    for (int * x = Ranges[0]; x <= Ranges[1]; x++)
+    {
+        for (int * y = Ranges[2]; y <= Ranges[3]; y++)
+        {
+            if (x == y)
+            {
+                return true;
+            }
+        }
+    }
+
+    return false;
+
+}
+
+
+int main()
+{
+
+    FILE * File;
+
+    File = fopen("input.text", "r");
+
+
+    char * Line = malloc(256);
+
+    int Total = 0;
+
+
+    char ** Elves;
+
+    Elves = malloc(2);
+
+    int * ElfRanges[4];
+    //exit(1);
+    while(fgets(Line, 256, File) != NULL)
+    {
+
+        for (int i = 0; i < 4; i++)
+            ElfRanges[i] = NULL;
+
+
+        // Splits the line by the comma in the middle of the line to get each elf's range
+        Elves[0] = strtok(Line, ",");
+        Elves[1] = strtok(NULL, ",");
+
+
+        // Loop through both elves
+        for (int a = 0; a < 2; a++)
+        {
+
+            printf(Elves[a]);
+            printf(" ");
+
+            char *Task = strtok(Elves[a], "-");
+
+            while (Task != NULL)
+            {
+
+                for (int i = 0; i < 4; i++)
+                {
+                    if (ElfRanges[i] == NULL)
+                    {
+                        ElfRanges[i] = (int *) strtol(Task, NULL, 10);
+                        break;
+                    }
+                }
+
+                Task = strtok(NULL, "-");
+
+            }
+
+        }
+
+        printf("Elf Pair Ranges: ");
+        for (int i = 0; i < 4; i++)
+            printf("%d ", ElfRanges[i]);
+
+        printf("\n\n");
+
+
+        if (Overlap(ElfRanges))
+            Total++;
+
+    }
+
+    printf("Total Overlaps: %d\n", Total);
+
+    fclose(File);
+}