Converting whole numbers to scientific notation

Is it possible to convert a whole number to a decimal and then later to scientific notation? For example, I would like to have '0' in the following format: 0.0000e+00. I've tried using the "format short e" and "format long e" commands but they are not working.

Answer 1

[Image Analyst]

fprintf('%4e\n', 0);

0.000000e+00

Answer 2

[Walter Roberson]

Not with the default display routines, no. You can use sprintf() or compose() with %.4e format to get character vector or string() objects

Answer 3

[Star Strider]

Another option —

expstr = @(x) [x(:).*10.^ceil(-log10(abs(x(:)+(x==0)))) floor(log10(abs(x(:)+(x==0))))];       % Updated: 2021 05 04
n = 0;
Result = sprintf('%.4fe%+04d', expstr(n))

Result = '0.0000e+000'

Result = sprintf('%.4fe%+03d', expstr(n))

Result = '0.0000e+00'

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