How to insert a complex root in a text using fprintf?

Hi, I'm new to matlab and could use some help regarding a pretty basic commando. This is my hypotethical problem:

*>> a = [1 0 4]

a =

     1     0     4

>> b = roots(a)

b =

        0 + 2.0000i
        0 - 2.0000i

>> c = num2str(b)

c =

0+2i 0-2i

>> d1 = c(1,:)

d1 =

0+2i

>> d2 = c(2,:)

d2 =

0-2i

>> fprintf('One root is: %g',d1) One root is: 48One root is: 43One root is: 50One root is: 105>>*

I would like the fprintf commando to print: One root is: 0+2i But for some reason I get a very weird print :/ Thanks in advance.

Answer 1

[Titus Edelhofer]

Hi,

you will need to print real and imaginary part seperately:

fprintf('One root is %g %+g i\n', real(d1), imag(d1));

Titus