part 1 day 2

day2.c

@@ -0,0 +1,37 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#define INPUT "inputs/input-day2"
+
+int
+main()
+{
+    static char buf[256];
+    static char cmd[256];
+    static int  operand;
+
+    int hpos = 0;
+    int depth = 0;
+
+    FILE *f = fopen(INPUT, "r");
+    
+    while(fgets(buf, 256, f)) {
+        sscanf(buf, "%s %d\n", cmd, &operand);
+
+        if(strcmp(cmd, "forward") == 0) {
+            hpos += operand;
+        } else if(strcmp(cmd, "up") == 0) {
+            depth -= operand;
+        } else if(strcmp(cmd, "down") == 0) {
+            depth += operand;
+        }
+    }
+
+    fclose(f);
+
+    printf("depth: %d hpos: %d\n", depth, hpos);
+    printf("result: %d\n", hpos * depth);
+
+    return 0;
+}

makefile

@@ -1,5 +1,7 @@
 
-DAYS = day1
+DAYS = day1 day2
+
+CFLAGS = -Wall -Werror
 
 all: $(DAYS)
 

run_all.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-DAYS="day1"
+DAYS="day1 day2"
 
 for x in $DAYS; do
     echo "running" $x