1 files changed, 73 insertions, 0 deletions
diff --git a/day8/day8.c b/day8/day8.c
new file mode 100644
index 0000000..c318863
--- /dev/null
+++ b/day8/day8.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+
+int readline(char* line) {
+  int ch, idx = 0;
+
+  while((ch = getchar()) != '\n' && ch != EOF)
+    line[idx++] = (char) ch;
+
+  line[idx] = '\0';
+  return idx;
+}
+
+int calcdiff1(char* line) {
+  int i, code = 0, mem = 0;
+
+  for(i = 0; line[i] != '\0'; i++) {
+    switch(line[i]) {
+      case '"':
+        code += 1;
+        break;
+      case '\\':
+        i += 1;
+        switch(line[i]) {
+          case '\\':
+          case '"':
+            code += 2;
+            mem += 1;
+            break;
+          case 'x':
+            i += 2;
+            code += 4;
+            mem += 1;
+        }
+        break;
+      default:
+        code += 1;
+        mem += 1;
+    }
+  }
+
+  return code - mem;
+}
+
+int calcdiff2(char* line) {
+  int i, nl = 2;
+
+  for(i = 0; line[i] != '\0'; i++) {
+    switch(line[i]) {
+      case '"':
+      case '\\':
+        nl += 2;
+        break;
+      default:
+        nl += 1;
+    }
+  }
+
+  return nl - i;
+}
+
+int main() {
+  char line[127];
+  int diff1 = 0, diff2 = 0;
+
+  while(readline(line)) {
+    diff1 += calcdiff1(line);
+    diff2 += calcdiff2(line);
+  }
+
+  printf("Part 1: %d\n", diff1);
+  printf("Part 2: %d\n", diff2);
+  return 0;
+}