| /* | |
| String startWith() and endsWith() | |
| Examples of how to use startsWith() and endsWith() in a String | |
| created 27 Jul 2010 | |
| modified 2 Apr 2012 | |
| by Tom Igoe | |
| This example code is in the public domain. | |
| https://www.arduino.cc/en/Tutorial/BuiltInExamples/StringStartsWithEndsWith | |
| */ | |
| void setup() { | |
| // Open serial communications and wait for port to open: | |
| Serial.begin(9600); | |
| while (!Serial) { | |
| ; // wait for serial port to connect. Needed for native USB port only | |
| } | |
| // send an intro: | |
| Serial.println("\n\nString startsWith() and endsWith():"); | |
| Serial.println(); | |
| } | |
| void loop() { | |
| // startsWith() checks to see if a String starts with a particular substring: | |
| String stringOne = "HTTP/1.1 200 OK"; | |
| Serial.println(stringOne); | |
| if (stringOne.startsWith("HTTP/1.1")) { | |
| Serial.println("Server's using http version 1.1"); | |
| } | |
| // you can also look for startsWith() at an offset position in the string: | |
| stringOne = "HTTP/1.1 200 OK"; | |
| if (stringOne.startsWith("200 OK", 9)) { | |
| Serial.println("Got an OK from the server"); | |
| } | |
| // endsWith() checks to see if a String ends with a particular character: | |
| String sensorReading = "sensor = "; | |
| sensorReading += analogRead(A0); | |
| Serial.print(sensorReading); | |
| if (sensorReading.endsWith("0")) { | |
| Serial.println(". This reading is divisible by ten"); | |
| } else { | |
| Serial.println(". This reading is not divisible by ten"); | |
| } | |
| // do nothing while true: | |
| while (true); | |
| } | |