How to format time with fprintf

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JDA
JDA 2022-2-28
评论： Star Strider 2022-3-1
To get the time it takes a program to execute, I set date_1 = datetime('now") at the beginning of a program, and date_2 = datetime('now) at the end of the program. Then Elapsed_time = date_2 - date_1. I would like to print the elapsed time using the fprintf command, and I would like it to be formatted to show minutes and seconds. How do I do that? Could you provide an example?

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采纳的回答

Star Strider
Star Strider 2022-2-28
Ran in:
Try this —
date_1 = datetime('now');
for k = 1:1E+8
rand;
end
date_2 = datetime('now');
Elapsed_time = date_2 - date_1;
Elapsed_time.Format = 'mm:ss.SSS';
fprintf('Elapsed time = %s', Elapsed_time)
Elapsed time = 00:07.641
I added the milliseconds simply for the demonstration.
.
  4 个评论
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JDA
JDA 2022-3-1
Great answer! That solved my problem. Thanks.
Star Strider
Star Strider 2022-3-1
Thank you!
As always, my pleasure!

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更多回答（1 个）

Walter Roberson
Walter Roberson 2022-2-28
Ran in:
date_2 = datetime('now');
date_1 = date_2 - rand()^2 %days
date_1 = datetime
28-Feb-2022 14:32:31
Elapsed_time = date_2 - date_1
Elapsed_time = duration
05:51:40
Elapsed_time.Format = 'mm:ss'
Elapsed_time = duration
351:40
fprintf('elapsed time was: %s\n', Elapsed_time)
elapsed time was: 351:40

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