# How do i convert this for loop into a while loop?

9 views (last 30 days)
Ilker Enes Çirkin on 28 May 2019
I just couldn't figure out how to convert it into a while loop. here is the code:
clc;
clear;
clear all;
n=input('Enter the number of elements in your array:'); % number of array elements
for i=1:n
values(i)=input('Enter the values:')
if values(i)<0
values(i)=values(i)*(-1)
end
end
for k=1:(n-1)
d=k+1
Xaverage(k)=(values(d)+values(k))/2
end
y=1:1:n;
plot(values,y)
hold on
z=1:1:(n-1);
plot(Xaverage,z)
Ilker Enes Çirkin on 28 May 2019
this is what i have tried so far:
clc;
clear;
clear all;
n=input('Enter the number of elements in your array:'); % number of array elements
i=1;
while i<n
values(i)=input('Enter the values:');
if values(i)<0
values(i)=values(i)*(-1)
end
end
k=1;
while k<(n-1)
d=k+1
Xaverage(k)=(values(d)+values(k))/2
end
y=1:1:n;
plot(values,y)
hold on
z=1:1:(n-1);
plot(Xaverage,z)

James Tursa on 28 May 2019
This for loop:
for i=1:n
% stuff
end
is equivalent to this while loop:
i = 1;
while i <= n
% stuff
i = i + 1;
end
Your biggest problem is you never increment i or k in your while loops.
##### 2 CommentsShowHide 1 older comment
James Tursa on 28 May 2019

Ilker Enes Çirkin on 28 May 2019
This is my current code:
n=input('Enter the number of elements in your array:'); % number of array elements
i=1;
while i<=n
i=i+1;
values(i)=input('Enter the values:')
if values(i)<0
values(i)=values(i)*(-1)
end
end
k=1;
while k<=(n-1)
k=k+1;
d=k+1
Xaverage(k)=(values(d)+values(k))/2
end
y=1:1:n;
plot(values,y)
hold on
z=1:1:(n-1);
plot(Xaverage,z)
##### 2 CommentsShowHide 1 older comment
Ilker Enes Çirkin on 28 May 2019
oh thank you so much it works now :)

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