Using Sprintf on matlab

2 次查看（过去 30 天）
Matthew Liao
Matthew Liao 2015-1-29
编辑： Star Strider 2015-1-29
Part b) Display the content of “log10(A)” on the screen using “sprintf” in the following format: “A is [1 10 100 1000]. log10(A) calculated using the natural logarithm function is [0 1 2 3].” In the format above, where the numbers are bold, the values of “A” and “log10(A)” must be used instead of simply typing the numbers. In other words, do not simply type in the entire line above between two quotation marks of “sprint”, but use a format similar to the following: sprint(‘A is [ %? ]. log10(A) calculated using the natural logarithm function is [ %?]’ ,A,?) What you need to find is the format to display “A” and “log10(A)”, e.g. %u, %d, %s etc (the first and second question marks) and the function you defined in part (a) for the third question mark.

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2015-1-29
See the documentation for sprintf.
  5 个评论
显示 3更早的评论
Matthew Liao
Matthew Liao 2015-1-29
logarithmic = sprintf('A is [%f %f %f %f], log10(A) calculated using the natural logarithm function is [%u %u %u %u]',A,C)
which works but when I did it this way it gave me some weird numbers
logarithmic = sprintf('A is [%u %u %u %u]',A,'log10(A) calculated using the natural logarithm function is [%u %u %u %u]',C)
logarithmic =
A is [1 10 100 1000]A is [108 111 103 49]A is [48 40 65 41]A is [32 99 97 108]A is [99 117 108 97]A is [116 101 100 32]A is [117 115 105 110]A is [103 32 116 104]A is [101 32 110 97]A is [116 117 114
Star Strider
Star Strider 2015-1-29
编辑：Star Strider 2015-1-29
I would use ‘%f’ for the natural logarithm function output as well. The ‘%u’ is for base 10 unsigned integers, and will produce strange results.
This works perfectly for me:
A = [1 10 100 1000];
C = log(A);
logarithmic = sprintf('A is [%f %f %f %f], log10(A) calculated using the natural logarithm function is [%f %f %f %f]',A,C)
and produces:
logarithmic =
A is [1.000000 10.000000 100.000000 1000.000000], log10(A) calculated using the natural logarithm function is [0.000000 2.302585 4.605170 6.907755]

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Entering Commands 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by