isUpperCase()
Description
Check if a character is upper case (that is, a letter in upper case) or not. Returns true if the character is upper case.
Syntax
isUpperCase(thisChar)
Parameter Values
- thisChar: variable. Allowed data types: char.
Return Values
- true: If thisChar is upper case.
- false: Otherwise
Example Code
char myChar;
void setup() {
Serial.begin(9600);
myChar = 'A';
Serial.print(myChar);
Serial.print(": ");
if (isUpperCase(myChar)) // tests if myChar is an upper case letter
Serial.println("The character is upper case");
else
Serial.println("The character is not upper case");
myChar = 'a';
Serial.print(myChar);
Serial.print(": ");
if (isUpperCase(myChar)) // tests if myChar is an upper case letter
Serial.println("The character is upper case");
else
Serial.println("The character is not upper case");
}
void loop() {}
The result in Serial Monitor:
8
Serial.println("Hello World!");
Message (Enter to send message to 'Arduino Uno' on 'COM15')
New Line
9600 baud
A: The character is upper case
a: The character is not upper case
See Also
- Language : isAlpha()
- Language : isAlphaNumeric()
- Language : isAscii()
- Language : isControl()
- Language : isDigit()
- Language : isGraph()
- Language : isHexadecimalDigit()
- Language : isLowerCase()
- Language : isPrintable()
- Language : isPunct()
- Language : isSpace()
- Language : isWhitespace()
- Language : char
- Language : if (conditional operators)
- Language : while (conditional operators)
- Language : read()
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