long

[Data Types]

描述

Long variables are extended size variables for number storage, and store 32 bits (4 bytes), from -2,147,483,648 to 2,147,483,647.

If doing math with integers, at least one of the numbers must be followed by an L, forcing it to be a long. See the Integer Constants page for details.

語法

long var = val;

參數

var: variable name.
val: the value assigned to the variable.

範例程式碼

long speedOfLight_km_s = 300000L;  // see the Integer Constants page for explanation of the 'L'

參考

• [程式語法] byte
• [程式語法] int
• [程式語法] unsigned int
• [程式語法] unsigned long
• [程式語法] Integer Constants
• [Language] Variable Declaration

語法參考主頁面

86Duino 參考的文本是根據 Creative Commons Attribution-ShareAlike 3.0 License，部分文本是從 the Arduino reference 修改的。 參考中的代碼示例已發佈到公共領域。