Problems with Serial Monitor Output

[kis000321]

I want to get the output of variable 'data' from the serial monitor once, but it comes up twice. What's the problem? (this code is addiction program)

float data;
bool s=0;

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

void loop(){
if (Serial.available() > 0 )
{ float temp =(float)Serial.parseFloat();
data += temp;
Serial.println(data);}
}

[gcjr]

@kis000321

float data;
bool s=0;

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

void loop(){
if (Serial.available() > 0 )
{ float temp =(float)Serial.parseFloat();
data += temp;
Serial.println(data);}
}

what exactly is the input?

what do you expect if the input contains something other than a float?

[killzone_kid]

what is your serial monitor ending is set to? set it to none.

[GolamMostafa]

Is it "ending" Tab or "Line ending" Tab?

Is it "none" or "No line ending"?

[sterretje]

Where does the word tab come from? Nobody used it till you did.

@GolamMostafa

Is it "none" or "No line ending"?

I don't think anybody cares. If @kis000321 does not understand, he/she can ask.