mirror of https://github.com/noisymime/Arduino.git
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/*
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Adding Strings together
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Examples of how to add strings together
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You can also add several different data types to string, as shown here:
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created 27 July 2010
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modified 30 Aug 2011
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by Tom Igoe
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http://arduino.cc/en/Tutorial/StringAdditionOperator
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This example code is in the public domain.
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*/
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// declare three strings:
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String stringOne, stringTwo, stringThree;
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void setup() {
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Serial.begin(9600);
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stringOne = String("stringThree = ");
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stringTwo = String("this string");
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stringThree = String ();
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Serial.println("\n\nAdding strings together (concatenation):");
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}
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void loop() {
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// adding a constant integer to a string:
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stringThree = stringOne + 123;
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Serial.println(stringThree); // prints "stringThree = 123"
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// adding a constant long interger to a string:
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stringThree = stringOne + 123456789;
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Serial.println(stringThree); // prints " You added 123456789"
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// adding a constant character to a string:
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stringThree = stringOne + 'A';
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Serial.println(stringThree); // prints "You added A"
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// adding a constant string to a string:
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stringThree = stringOne + "abc";
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Serial.println(stringThree); // prints "You added abc"
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stringThree = stringOne + stringTwo;
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Serial.println(stringThree); // prints "You added this string"
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// adding a variable integer to a string:
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int sensorValue = analogRead(A0);
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stringOne = "Sensor value: ";
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stringThree = stringOne + sensorValue;
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Serial.println(stringThree); // prints "Sensor Value: 401" or whatever value analogRead(A0) has
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// adding a variable long integer to a string:
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long currentTime = millis();
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stringOne="millis() value: ";
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stringThree = stringOne + millis();
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Serial.println(stringThree); // prints "The millis: 345345" or whatever value currentTime has
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// do nothing while true:
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while(true);
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} |