Fix comparison between signed and unsigned warning in StringLength example

per1234 · cmaglie · commit 4d3048954327 · 2017-07-07T00:32:37.000+02:00
Fixes: warning: comparison between signed and unsigned integer expressions compiler warning. Closes arduino/Arduino#693 (in conjunction with arduino/Arduino#6448)
diff --git a/examples/08.Strings/StringLength/StringLength.ino b/examples/08.Strings/StringLength/StringLength.ino
@@ -13,7 +13,7 @@
  */
 
 String txtMsg = "";                         // a string for incoming text
-int lastStringLength = txtMsg.length();     // previous length of the String
+unsigned int lastStringLength = txtMsg.length();     // previous length of the String
 
 void setup() {
   // Open serial communications and wait for port to open:
