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Return function to go back to the beginning of the script

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Furkan Erdem
Furkan Erdem 2021-4-28
编辑： Alan Stevens 2021-4-28
x=50;
t=0:x:1000;
n=numel(t);
h(1)=100;
es=0.1;
for i=1:n-1;
f1=2-0.1*(h(i)^(1/2));
h(i+1)=h(i)+x*f1;
f2=2-0.1*(h(i+1)^(1/2));
e(i+1)=((f2-f1)/2)*x;
if e(i+1)> es
x=x/10;
return
end
end
t1=transpose(t);
h1=transpose(h);
e1=transpose(abs(e));
T=table(t1,h1,e1)
I wanted to calculate the error in the presented Euler's Method code. Error is supposed to be less than 0.1, and I want to change x to one tenth of x if error is above 0.1. Can't make the code return the beginning to execute the whole script again. How should I proceed?

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采纳的回答

Alan Stevens
Alan Stevens 2021-4-28
编辑：Alan Stevens 2021-4-28
Make the euler routine a function and call it from a while loop. Along the lines of:
...
while error>0.1
[h, error] = Euler(t,h1);
end
...
function [h, error] = Euler(t,h1)
% Euler calcs
h = ...
error = ...
end

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