creating a for loop with a mixture of strings and numbers as outputs

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I want to create a for loop that will have the following output:
"trial1.csv" on its first run, "trial2.csv" on its second run, "trial3.csv" on its third run......etc. What is the most efficient way of doing that?
trial1 = sprintf ('max%d', k) which gives me the trialk piece but I was not able to add the .csv piece. It gave me an error every time I tried adding it in different ways. I found a work around but needed 3 lines of code instead of 1. It works but doesn't seem to efficient.
I am still learning matlab so I am sure its a simple problem
Thanks in advance!

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James Tursa
James Tursa 2016-3-16
编辑:James Tursa 2016-3-16
Does this do what you want:
sprintf('max%d.csv', k)
In general, you can use concatenation brackets [ ] to join strings together. E.g., this would produce the same result:
[sprintf('max%d', k) '.csv']

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