2 files changed, 10 insertions, 0 deletions
diff --git a/strings.c b/strings.c
index fb3b0ac..7c87e29 100644
--- a/strings.c
+++ b/strings.c
@@ -71,3 +71,11 @@ void uint32_to_hexstringt(uint32_t number, char buf[9])
   trim_0s(buf);
 }
 
+size_t strlen(char string[])
+{
+  size_t len;
+
+  for (len = 0; string[len]; len++);
+
+  return len;
+}
diff --git a/strings.h b/strings.h
index bfe6fd0..7e772d3 100644
--- a/strings.h
+++ b/strings.h
@@ -21,4 +21,6 @@ void uint32_to_decstringt(uint32_t number, char buf[11]);
 
 void uint32_to_hexstringt(uint32_t number, char buf[9]);
 
+size_t strlen(char string[]);
+
 #endif // STRINGS_H