1 files changed, 15 insertions, 0 deletions
diff --git a/str_len.c b/str_len.c
new file mode 100644
index 0000000..2d2f88b
--- /dev/null
+++ b/str_len.c
@@ -0,0 +1,15 @@
+#include "str.h"
+
+unsigned int str_len(s)
+register char *s;
+{
+  register char *t;
+
+  t = s;
+  for (;;) {
+    if (!*t) return t - s; ++t;
+    if (!*t) return t - s; ++t;
+    if (!*t) return t - s; ++t;
+    if (!*t) return t - s; ++t;
+  }
+}