# read

## 函数原型

```cpp
int HardwareSerial::read();
```

## 作用

向串口打印数据

`Serial.println()` 比 `Serial.print()` 多一个换行。

使用前必须用 `Serial.begin()` 初始化 `Serial`。

## 返回值

返回下一个字符串，就像C语言的 `getc()` 一样。

## 示例

```cpp
char c = Serial.read();
```


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