unsigned long
描述
unsigned long (无号长整数) 是一个延伸储存空间的变数型别,可以储存 32bits (4 bytes) 大小的整数。不像 signed long (有号长整数),它不储存负数,所以储存范围从 0 到 4,294,967,295 (2^32 – 1)。
范例
unsigned long time; void setup() { Serial.begin(9600); } void loop() { Serial.print("Time: "); time = millis(); // 印出程式执行至目前为止所经过的时间 Serial.println(time); // 等一秒,不要让它一下子输出大量的资料 delay(1000); }
语法
unsigned long var = val;
var
unsigned long 型态的变数名称
val
指派给变数的值
See also
- byte
- int
- unsigned int
- long
- Variable Declaration
本页由热血青年 LBU 译自英文版。
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.