 # LCD

``````lcd.setCursor(0,2);
lcd.print(line_percentage);
lcd.print("%");
``````

when this code print in LCD give three number such as( 100%) and when give two number (85%%) and when give one number (0%%%)
i need to out (100%) & (85%) & (0%) Why not just print a space in front if 'x' is less than 100 and two if it is less than 10?

Or clear the line with spaces first…

``````lcd.print("         ");
``````

Or put a couple of spaces on end of line that prints percentage

``````lcd.print("%  ");
``````

JimboZA:
Or clear the line with spaces first…

``````lcd.print("         ");
``````

Doesn’t the liquidCrystal library include a clear function? Something like lcd.clear();?

Let’s not use the library clear. It clears the whole screen and when used improperly it flickers the screen. All you need it to do this:

``````if (number<10) lcd.print("  "); // two spaces
if ((number>=10)&&(number<100)) lcd.print(" ");// one space
lcd.print(number);
lcd.print("%");
``````

Just print two spaces after the number if you don't mind it being left-justified. That will clear any left-over from a previous, larger, number.

liudr:
Let’s not use the library clear. It clears the whole screen and when used improperly it flickers the screen. All you need it to do this:

``````if (number<10) lcd.print("  "); // two spaces
``````

if ((number>=10)&&(number<100)) lcd.print(" “);// one space
lcd.print(number);
lcd.print(”%");

In case you want to switch to zero-padded numbers like 010%, you can just replace space with 0 liudr:
All you need it to do this:

``````if (number<10) lcd.print("  "); // two spaces
``````

if ((number>=10)&&(number<100)) lcd.print(" “);// one space
lcd.print(number);
lcd.print(”%");

Seems overly complex.
Why not use:

``````if (number <100) lcd.print(" "); // space instead of 100's
if (number < 10) lcd.print(" "); // space instead of 10s
lcd.print(number);
lcd.print("%");
``````

— bill

I just assumed whoever asks this type of question only has basic programming skills and try to minimize my time to explain why the code so I wrote in very plain but unoptimized style ;)

Could you try using the modulo operator ‘%’ ?
For example,

``````{
if ((val)%100 < 10) {
lcd.print(" ");
lcd.print(val);
}
else {
lcd.print(val);
}
``````

Might have to play around to get it right

Could you try using the modulo operator '%' ? For example,

The modulo operator is noticeable by its absence in your example.

Ahh, sorry. Fixed it