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37 lines
940 B
C++
37 lines
940 B
C++
/*
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String charAt() and setCharAt()
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Examples of how to get and set characters of a String
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created 27 July 2010
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by Tom Igoe
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http://arduino.cc/en/Tutorial/StringCharacters
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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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Serial.println("\n\nString charAt() and setCharAt():");
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}
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void loop() {
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// make a string to report a sensor reading:
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String reportString = "SensorReading: 456";
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Serial.println(reportString);
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// the reading's most significant digit is at position 15 in the reportString:
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String mostSignificantDigit = reportString.charAt(15);
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Serial.println("Most significant digit of the sensor reading is: " + mostSignificantDigit);
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// add blank space:
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Serial.println();
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// you can alo set the character of a string. Change the : to a = character
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reportString.setCharAt(13, '=');
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Serial.println(reportString);
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// do nothing while true:
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while(true);
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} |