# How to transform a wile loop into a for loop

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Danny Maefengea on 18 Jun 2020
Commented: Danny Maefengea on 18 Jun 2020
Hi
I have been working with while and for loops, and I want to know how to transpose or change a while loop to a for loop and vise versa
I need your help with this.
Thank you

James Tursa on 18 Jun 2020
What have you tried so far? What problems are you having with this homework assignment?
Danny Maefengea on 18 Jun 2020
This is what I have done sir.
%while loop
x=0
while x<20
disp(x);
x = x+2;
end
%%for loop
x = 0
for x=0;x<20;x=x+2
disp(x)
end

Pulkit Goel on 18 Jun 2020
In MATLAB, fo create a for loop, instead of specifying x=x+2 like you do in C, you write the skip as 0:2:20. This would make your code look like:
x=0;
for x=0:2:20
disp(x);
end
For creating while loop, it is similar to what you mentioned, as we have in C:
x=0;
while x<=20
disp(x);
x=x+2;
end
The equality sign is required in while as the condition is evaluated at start and logic will fail to enter the loop when you have updated the value of x to 20, but are yet to print it.

#### 1 Comment

Danny Maefengea on 18 Jun 2020
Thanks

### More Answers (1)

Anish Walia on 18 Jun 2020
The for loop for your while loop would be
% 0:2:20 will produce a matrix starting at 0, with increment step of 2 in each iteration and will go till 20
for x=0:2:20
disp(x);
end
For more information on loops refer to the following:

#### 1 Comment

Danny Maefengea on 18 Jun 2020
Thanks