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Number of leading zeroes as a variable

조회 수: 19(최근 30일)
James
James 2016년 10월 24일
답변: Honglei Chen 2016년 10월 24일
I know that to print out a number with a certain amount of leading zeroes, you are supposed to use %0X, where X is the number of digits you want in your output. For example, sprintf('%06g',13) gives you the string '000013' as output. Is there a way to make the formatting value a variable? Something along the lines of
function x=leadzero(y,z)
x=sprintf('%0y',z)
end
I know it can be done with a for loop, but is there are way to implement this directly into the sprintf command?

채택된 답변

dpb
dpb 2016년 10월 24일
Fer shure, just write the format string desired dynamically--
function s=leadzero(Nz,z)
fmt=num2str(Nz,'%%0%dg');
s=sprintf(fmt,z)
end
Nz for "Number zeros" seemed a better variable name than y as did an s for a returned string output variable...the format string expression can be wrapped inside the sprintf call, of course, just wrote it out for clarity here.

추가 답변(1개)

Honglei Chen
Honglei Chen 2016년 10월 24일
y = 6;
z = 13;
sprintf(['%0' num2str(y) 'g'],z)

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