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[Comparison Operators]

描述

Compares the variable on the left with the value or variable on the right of the operator. Returns true when the operand on the left is less (smaller) than or equal to the operand on the right. Please note that you may compare variables of different data types, but that could generate unpredictable results, it is therefore recommended to compare variables of the same data type including the signed/unsigned type.

語法

x <= y; // is true if x is smaller than or equal to y and it is false if x is greater than y

參數

X: variable. Allowed data types: int, float, double, byte, short, long.
y: variable or constant. Allowed data types: int, float, double, byte, short, long.

範例程式碼

if (x <= y) { // tests if x is less (smaller) than or equal to y
  // do something only if the comparison result is true
}

Tip

Negative numbers are smaller than positive numbers.

語法參考主頁面

86Duino 參考的文本是根據 知識共享署名-相同方式分享 3.0 許可證，部分文本是從 Arduino 參考 修改的。 參考中的代碼示例已發佈到公共領域。