k=1;201;
显示 更早的评论
采纳的回答
Walter Roberson
2011-3-2
As asked:
A variable named "k" is to be created. The variable is to be assigned a value. The value to be assigned is the list of numbers that is the single number 1. The ";" that follows that indicates that the result of the assignment is not to be displayed. That is the end of that bit of execution, and the rest of the line is evaluated separately. The value 201 is constructed, and as it is not used in any other way, its value is to be assigned to the default variable named "ans". The ";" that follows that indicates that the result of the assignment is not to be displayed.
But what you probably meant to ask about was
k=1:201;
with a ":" between the numbers instead of a ";". The meaning of that would be:
A variable named "k" is to be created. The variable is to be assigned a value. The value to be assigned is the list of numbers starting from 1, incrementing by 1, until the last number that is less than or equal to 201. The ';' means that the result of doing the assignment is not to be displayed.
Note that k=1:201; would have a different but related meaning if proceeded by the keyword "for", as in
for k=1:201;
更多回答（1 个）
Matt Fig
2011-3-1
It means: set the variable k to equal 1, then set the variable ans to 201, displaying nothing.
You can see this by executing these lines at the command window:
clear all,clc
k=1;201;
whos
k
ans
Now, if you had put this:
k=1:201; % Note the colon.
that would mean: set the variable k to a vector of length 201 with the elements 1 through 201, inclusive.
类别
在 帮助中心 和 File Exchange 中查找有关 Operators and Elementary Operations 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
