break

Projects Programming
1

part of code

void rec_tab(){
byte i=0,chk=0,j=0;
while(1){
if (Serial.available()>0){
in_buff[j] = Serial.read();
chk^=in_buff[j];
j++;
if (j==in_buff[1]+2) break;

lcd.setCursor(0,1);
lcd.print(chk,HEX);
}
}
lcd.setCursor(0,0);
lcd.print(" after break ");
lcd.print(chk,HEX);
}

Why break clear chk ??
Before break LCD display 0xA3 after break 0x00 ??

2

Have you tried posting down the street at snippets-r-us.com? Here, we get to see ALL of your code, posted using the code icon (with the #), not the quote icon.

3

break isn't clearing chk, your code is changing it. break exits the innermost enclosing loop or switch statement with immediate effect.

4

break does not break out of "ifs", only loops. Your break leaves the while loop.