Why printing '10'?-CodePudding

I wrote a program for char to decimal below, and I don't know why it printing '10' in between.

int variable;

void setup() 
{
    Serial.begin(9600);
}

void loop() 
{
    if(Serial.available() > 0)
    {
        variable = Serial.read();

        Serial.println(variable);
    }

}

CodePudding user response：

10 is \n in ASCII which is println very likely appending to the output in each call.

Use Serial.print to only print the number.

CodePudding user response：

You should specify expected output for better understanding in order to answer