如何在 C++ 中将字节数组转换为字符

Question

I don't know how to write a code that convert a byte array to a char array in C++ (using an Arduino board) and publish mqtt. I tried to search but I don't understand.

Example

byte Code[3] = {0x00 ,0x01 , 0x83};
char byteTochar[3];
    
for (int i = 0; i <= 2; i++) {
    Serial.printf("%d", Code[i]);
    Serial.println();
    
    client.publish("publish/data", byteTochar[i]);
}

Error message

converting to 'String' form initializer list would use explicit constructor 'String::String'(unsigned char, unsigned char)'

Answer 1

Its actually do c, ArduinoPlayGround http://playground.arduino.cc/Main/Printf .

However, you can just use casting for each element:

char h = (char)Code[i];