How to ask for user's input in a program

I need to create a program which would ask for user to type any value m and choose between functions (sin or cos). After that I have to calculate an equation x=m:.1:m+4*pi and based on the chosen function the program should draw a discrete data plot. The program should later continue the calculations each 0.5s increasing m by pi/8 for 15 times and then draw a new plot in the earlier figure. I should use for, if, else constructors and I have no idea where to start and how to do it. I would love any kind of help! Thanks in advance!

[madhan ravi]

what have we tried so far?

[Dominykas Repecka]

I have already done the user's input for m, im stuck on the function selection, how do i make that the user could select sin or cos and then make use of it in calculations?

[madhan ravi]

upload your code

[Dominykas Repecka]

prompt='Iveskite skaiciu m: ';

m=input(prompt)

x=m:.1:m+4*pi;

A=sin(x);

B=cos(x);

prompt2='Pasirinkite funkcija cos(B)/sin(A): ';

f=input(prompt2)

Answer 1

[Rik]

You're already very close. You just need to follow the instructions: use if and else. You should be able to complete the rest of the assignment on your own building on the code below. It uses anonymous functions so you can even expand this very easily to more functions.

prompt='Iveskite skaiciu m: ';

m=input(prompt);

x=m:.1:m+4*pi;

prompt2='Pasirinkite funkcija cos(B)/sin(A): ';

f=input(prompt2,'s');%save as string

if strcmp(f,'A')
    fun=@sin;
elseif strcmp(f,'B')
    fun=@cos;
else
    error('invalid selection')
end

figure(1),clf(1)
plot(x,fun(x))

[Stephen23]

fun = @sin;

[Rik]

Good point, I'll edit it, although this form has the benefit of showing how you can insert any function you want.

[Dominykas Repecka]

Thank you very much! This helped so much, I'll try to do the rest on my own

[Dominykas Repecka]

I've been really struggling understanding the loop function and mainly how it works

 % prompt='Iveskite skaiciu m: ';
m=input(prompt);
x=m:.1:m+4*pi;
prompt2='Pasirinkite funkcija cos(B)/sin(A): ';
f=input(prompt2,'s');
if strcmp(f,'A')
    fun=@sin;
elseif strcmp(f,'B')
    fun=@cos;
else
    error('Negalimas pasirinkimas')
end
figure(1),clf(1)
plot(x,fun(x))

 % x=m:.1:m+4*pi;
for m = 0:pi/8:15
    t = timer('Period', 0.5);
    disp(m)
end

how do I figure the last part? I tried to write here something, but i have no idea how the syntax works and help or doc commands dont really help me much