Using the command num2str

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Khalid Alsinan
Khalid Alsinan 2020-11-11
评论： Ameer Hamza 2020-11-11
When I run:
num2str(5.7831e-04)
I get: '0.00057831'
How can I obtain '5.7831e-04' instead?

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回答（1 个）

Ameer Hamza
Ameer Hamza 2020-11-11
Use sprintf()
sprintf('%.4e', 5.7831e-04)
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Khalid Alsinan
Khalid Alsinan 2020-11-11
Never mind! Thank you so much Ameer!!
Ameer Hamza
Ameer Hamza 2020-11-11
Storing a number is not a matter of format. Inside memory, it will be saved as a double datatype with same bits. The format is only important if you want to print the number.

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