For loop comand use

F.O
2017 10 5
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更新时间：2017 10 6
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Hi,I want to compute the sum 2 + 4 + 6 + 8 + 10 + : : : + 100 by using For loop . Can anyone here thankfully help me out?

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James Tursa
James Tursa 2017-10-5
What have you done so far? What specific problems are you having with your code?
F.O
F.O 2017-10-5
编辑：James Tursa 2017-10-5
Actually I am asked to do the sum in to ways and the second one is For loop which i dont understand first way is
a=sum([2:2:100])
I tried the way you recommended but get nothing when i run it except that i get
k=100
total=50
total = 0;
for k=2:2:100;
total = total + 1;
end
James Tursa
James Tursa 2017-10-5
编辑：James Tursa 2017-10-5
Change
total = total + 1;
to
total = total + k; % <-- You need to add the index variable k, not 1 every time
F.O
F.O 2017-10-6
I have changed it and got correct answer. Thanks

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James Tursa
James Tursa 2017-10-5

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The general outline of your for loop would be:
total = 0;
for k=start_value:increment:end_value % <-- you fill in the start_value, increment, and end_value
total = total + something; % <-- you fill in the something
end

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