How to remove decimal??

Hello,,

i wanna know how to remove decimal??

Example a = 2.0000

how to remove zero beside point so it will be a = 2??

please help me

[Oleg Komarov]

Note that a is most likely not exactly 2, so the question is, do you want to "display" only the integer part or do you want to "drop" the decimal?

Answer 1

[Oleg Komarov]

To make it clear:

a = 2.00000000001
a =
    2.0000

Displaying the integer part ( ans is a char), but a retains the fraction:

sprintf('%.f',a)
ans =
2

Dropping the fraction ( ans is same class as a):

fix(a)
ans =
     2

Answer 2

[Fabio]

As Oleg says if you want to 'display' the integer part just cast to String with num2Str() function: http://www.mathworks.it/help/techdoc/ref/num2str.html

If you want to drop the decimal part you can use round() function: http://www.mathworks.it/help/techdoc/ref/round.html

or the fix() function: http://www.mathworks.it/help/techdoc/ref/fix.html

[Luisa]

Thank you. It worked for me. I needed to rewrite a = 6.7200 as 6.72.

[Walter Roberson]

@Luisa

Note that when 6.7200 is displayed, chances are that you have "format short" in effect, and changing the format would change how it is displayed

a = 6.7200;
format short
a

a = 6.7200

format long g
a

a = 
                      6.72

If you have format short in effect, then although you can round(), the format short puts the display back to 4 decimal places.

b = 6.72003;
format short
b

b = 6.7200

round(b,2)

ans = 6.7200

format long g
b

b = 
                   6.72003

round(b,2)

ans = 
                      6.72

If you have a specific output format needed, it is often best to use fprintf() or sprintf() or compose()

[Luisa]

Thank you so much.