Trouble With Simple 'while' Loop Logical Operator

2013 1 30
1 个回答
回答已采纳
8 次查看（30 天）

0 个投票

Can't seem to get my while loop to execute.
-No error showing
-Getting rid of 1 initial condition in 'while' loop and the script runs (not how I want though). I need my 'while' loop to accept a number between 1 and 12 (corresponds to 1=Jan, 2=Feb, etc).
Any help with this greatly appreciated!
Script Below:
clear all
clc
M = 100;
Y = -100;
disp('After selecting a month and year, the number of days within that month will be displayed.')
while Y<0
Y = input('Please select a year: ');
end
while (M<0) & (M>12)
M = input('Please select a month: ');
end

请先登录，再回答此问题。

 采纳的回答

James Kerns
James Kerns 2013-1-30

2 个投票

It would appear you need an OR logical operator in the
while (M<0) & (M>12)
I.e. make it
while (M<0) || (M>12)

3 个评论
显示 1更早的评论 隐藏 1更早的评论

Jan
Jan 2013-1-30
编辑：Jan 2013-1-30
Obviously this cannot be true ever: "M lower than 0 and M greater than 12". Frequently reading the source code loud helps to find bugs.
Dave
Dave 2013-1-30
Thanks so much! I thought I went through all the logical operators for the sake of debugging but I guess I didn't. Thanks again :)
Jan
Jan 2013-1-30
Btw., omit the useless clear all: removing all loaded functions from the memory wastes time only. If you really want to clear the variables, use clear variabels.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Loops and Conditional Statements 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