Commiting 2015/day04/day04.c for backup

2015/day04/day04.c

@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <openssl/md5.h>
+
+void compute_md5(char *str, unsigned char digest[16]) {
+    MD5Context ctx;
+    MD5_Init(&ctx);
+    MD5_Update(&ctx, str, strlen(str));
+    MD5_Final(digest, &ctx);
+}
+
+void part1() {
+  unsigned char digest[16];
+  compute_md5("asdf", digest);
+}
+
+void part2() {
+}
+
+int main(int argc, char **argv) {
+  int doPart = 1;
+  if(argc > 1) { doPart = argv[1][0] - '0'; }
+  if(doPart == 1) {
+    part1();
+  } else {
+    part2();
+  }
+  return 0;
+}