From c52a19c71cf16346c5de5e21425063047311b786 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Thu, 9 Dec 2021 23:50:11 +0000
Subject: Added day 8.  Part 2 doesn't work.

---
 8.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 8.c

(limited to '8.c')

diff --git a/8.c b/8.c
new file mode 100644
index 0000000..c0bf7c5
--- /dev/null
+++ b/8.c
@@ -0,0 +1,53 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+static char *ReadLine(char *p, size_t size, FILE *fp)
+{
+    if ((p=fgets(p, size, fp)))
+    {
+        size_t l = strlen(p);
+
+        while(l && p[l-1] == '\n')
+        {
+            p[--l] = 0;
+        }
+    }
+
+    return p;
+}
+
+int main(void)
+{
+    char buff[0x8000];
+    char *signal[10] = {0};
+    char *digit[4] = {0};
+    int sum = 0;
+    int f = 0;
+
+    while(ReadLine(buff, sizeof buff, stdin))
+    {
+        for(f = 0; f < 10; f++)
+        {
+            signal[f] = strtok(f == 0 ? buff : NULL, " |");
+        }
+
+        for(f = 0; f < 4; f++)
+        {
+            size_t len;
+
+            digit[f] = strtok(NULL, " |");
+
+            len = strlen(digit[f]);
+
+            if (len == 2 || len == 4 || len == 3 || len == 7)
+            {
+                sum++;
+            }
+        }
+    }
+
+    printf("sum = %d\n", sum);
+
+    return 0;
+}
-- 
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