isUpperCase()

설명

문자가 대문자인지 분석합니다. thisChar가 대문자면 true를 반환합니다.

문법

isUpperCase(thisChar)

매개변수

  • thisChar: 변수. 허용되는 자료형: char

반환값

  • thisChar가 대문자면 true를, 아니라면 false를 반환합니다

예제 코드

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:

COM6
Send
A: The character is upper case a: The character is not upper case
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

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