64 lines
1.8 KiB
Text
64 lines
1.8 KiB
Text
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/*
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String constructors
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Examples of how to create strings from other data types
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created 27 July 2010
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modified 4 Sep 2010
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by Tom Igoe
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http://arduino.cc/en/Tutorial/StringConstructors
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This example code is in the public domain.
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*/
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void setup() {
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Serial.begin(9600);
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}
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void loop() {
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// using a constant String:
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String stringOne = "Hello String";
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Serial.println(stringOne); // prints "Hello String"
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// converting a constant char into a String:
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stringOne = String('a');
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Serial.println(stringOne); // prints "a"
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// converting a constant string into a String object:
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String stringTwo = String("This is a string");
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Serial.println(stringTwo); // prints "This is a string"
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// concatenating two strings:
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stringOne = String(stringTwo + " with more");
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// prints "This is a string with more":
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Serial.println(stringOne);
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// using a constant integer:
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stringOne = String(13);
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Serial.println(stringOne); // prints "13"
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// using an int and a base:
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stringOne = String(analogRead(A0), DEC);
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// prints "453" or whatever the value of analogRead(A0) is
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Serial.println(stringOne);
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// using an int and a base (hexadecimal):
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stringOne = String(45, HEX);
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// prints "2d", which is the hexadecimal version of decimal 45:
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Serial.println(stringOne);
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// using an int and a base (binary)
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stringOne = String(255, BIN);
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// prints "11111111" which is the binary value of 255
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Serial.println(stringOne);
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// using a long and a base:
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stringOne = String(millis(), DEC);
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// prints "123456" or whatever the value of millis() is:
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Serial.println(stringOne);
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// do nothing while true:
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while(true);
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}
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