+=

[Compound Operators]

描述

This is a convenient shorthand to perform addition on a variable with another constant or variable.

語法

x += y; // equivalent to the expression x = x + 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

x = 2;
x += 4; // x now contains 6

參考

• [Language] Normal Addition

語法參考主頁面

The text of the 86Duino reference is a modification of the Arduino reference and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.