Added core String library examples

build/shared/examples/8.Strings/StringComparisonOperators/StringComparisonOperators.pde

@@ -0,0 +1,82 @@
+/*
+  Comparing Strings 
+ 
+ Examples of how to compare strings using the comparison operators
+ 
+ The circuit:  No external hardware needed.
+ 
+ created 27 July 2010
+ by Tom Igoe
+ 
+ This example code is in the public domain.
+ 
+ */
+String stringOne, stringTwo;
+
+void setup() {
+  Serial.begin(9600);
+  stringOne = String("this");
+  stringTwo = String("that");
+  Serial.println("\n\nAdding strings together (concatenation):");
+
+}
+
+void loop() {
+  // two strings equal:
+  if (stringOne == "this") {
+    Serial.println("StringOne == \"this\""); 
+  }
+  // two strings not equal:
+  if (stringOne != stringTwo) {
+    Serial.println(stringOne + " =! " + stringTwo);
+  }
+
+  // two strings not equal (case sensitivity matters):
+  stringOne = "This";
+  stringTwo = "this";
+  if (stringOne != stringTwo) {
+    Serial.println(stringOne + " =! " + stringTwo);
+  }
+
+  // a numeric string compared to the number it represents:
+  stringOne = "1";
+  int numberOne = 1;
+  if (stringOne == numberOne) {
+    Serial.println(stringOne + " = " + numberOne);
+  }
+
+  // two numeric strings compared:
+  stringOne = "2";
+  stringTwo = "1";
+  if (stringOne >= stringTwo) {
+    Serial.println(stringOne + " >= " + stringTwo);
+  }
+
+// comparison operators can be used to compare strings for alphabetic sorting too:
+  stringOne = String("Brown");
+  if (stringOne < "Charles") {
+    Serial.println(stringOne + " < Charles"); 
+  }
+
+  if (stringOne > "Adams") {
+    Serial.println(stringOne + " > Adams"); 
+  }
+
+  if (stringOne <= "Browne") {
+    Serial.println(stringOne + " <= Browne"); 
+  }
+
+
+  if (stringOne >= "Brow") {
+    Serial.println(stringOne + " >= Brow"); 
+  }
+
+  // do nothing while true:
+  while(true);
+}
+
+
+
+
+
+