1 files changed, 11 insertions, 0 deletions
diff --git a/djb/str_diff.c b/djb/str_diff.c
new file mode 100644
index 0000000..2c5ba59
--- /dev/null
+++ b/djb/str_diff.c
@@ -0,0 +1,11 @@
+int str_diff(const char* a, const char* b) /*EXTRACT_INCL*/ {
+  unsigned int u=0;
+  char ch=0;
+  for (;; u++) {
+    ch = a[u]-b[u];
+    if (ch) break;
+    if (a[u]==0) break;
+  }
+  return ch;
+}
+