displaying a description and variable value in the same line

my knowledge isnt extensive in matlab, still a new user.

what i am trying to accomplish is displaying a variables value after a description.

what i want to display:

description : value

ex.

the highest point of the mountain is : 4563 ft

the variable hp = 4563 is already stored into the variables. (hp is the variable name for highest point)

Answer 1

[Image Analyst]

Try this:

fprintf('The highest point of the mountain is : %d feet.\n', hp);

Just like with the C language, if you're familiar with that. Or, if hp is a floating point number instead of an integer, use %f instead of %d:

fprintf('The highest point of the mountain is : %.2f feet.\n', hp);

[Tyler]

ok thanks, that worked wonderfully except there are 2 more variables, so 3 of what you stated:

fprintf('The highest point of the mountain is : %d feet.\n', hp);

only thing is it puts all 3 on the same line:

The highest point of the mountain is : 4563 feetThe angle of.... and so on

i need "The angle of...." to display on the next line rather than having all on one line in essentially a run-on sentence if you get what i mean.

[Tyler]

in the script i have it:

hp = 4653; fprintf('the highest point of the mountain.....)"
ang = 76; fprintf('the angle of the slope is.....)"
v0 = 150; fprintf('the initial velocity is.....)"

and it displays:

the highest point of the mountain is : 4563 feetThe angle....... 76 degreesThe initial.......

as you see, the are all diplayed in one line of text.

[Matt Fig]

hp = 4653; 
ang = 76; 
v0 = 150; 
fprintf(['\n\nThe highest point of the mountain is %i.\n',...
         'The angle of the slope is %i.\n',...
         'The initial velocity is %i.\n'],hp,ang,v0)

[Ben Siver]

Can you do this, but perform math within the function? for example I defined x already, and I want to display exp(x).

I tried fprintf('For x=-20 the true value of e^x is: %f\n', exp(x)); and it just returned 0.000000.

Im assuming I just have to first define exp(x) as a variable first, but just checking.

[Image Analyst]

Ben, that should work if you put enough significant digits:

x = -20;
y = exp(x)
fprintf('For x=-20 the true value of e^x is: %.22f\n', exp(x));

You'll see

y =

2.06115362243856e-09

For x=-20 the true value of e^x is: 0.0000000020611536224386

or try

fprintf('For x=-20 the true value of e^x is: %g\n', exp(x));

For x=-20 the true value of e^x is: 2.06115e-09

[Steven Lord]

That is the correct behavior. What is exp(-20)?

y = exp(-20)

y = 2.0612e-09

That's a pretty small number. How does that number display using the %f format inside fprintf? How would it display using a different format? Or what if you modify the format to show more decimal places?

x = -20;
fprintf('For x=-20 the true value of e^x is: %f\n', exp(x)); 

For x=-20 the true value of e^x is: 0.000000

fprintf('For x=-20 the true value of e^x is: %g\n', exp(x));

For x=-20 the true value of e^x is: 2.06115e-09

fprintf('For x=-20 the true value of e^x is: %.10f\n', exp(x));

For x=-20 the true value of e^x is: 0.0000000021

Answer 2

[Tyler]

nevermind, i got it.

i had the \ mixed up with the / so the next line wasnt being created