matlab表格循环赋值,[初学笔记] matlab中的while loop中使用break语句的新理解和运用: 计算和赋值放到循环里头...

这个下午为了改这段代码改了一下午。纠结的点是：

1 为什么break语句不发挥作用，依然死循环

2 break发挥作用了，但只有一次重新输入机会

3 break一次重新输入后，gender的输出依然是第一个错误结果，没有被overwrite

用到的运算步骤必须放到循环里面，不然break语句无法执行

下面是我自己的代码，留意其中很重要的计算部分

cig2 = isempty(gender); % if it is an empty input

cig1 = strcmp(gender,s1); % compare the input and the right answer

judcig1 = any(cig1); % use any to test is it any "1" in the answer

以及重新赋值部分

gender = gender；

尤其是计算部分，如果在循环里面省略，是无法达到循环的，会一直死循环或者直接break

如果赋值部分不加上去，有可能会导致输出的结果永远都是错的结果

ingender = cell(1,3); % establish a cell

ingender = {"f","m","x"}; % 3 input strings into the cell

s1 = cellstr(ingender); % transfer from cell to string

%%% 可以写成function，用于循环中直接引用function，下面的部分也可以直接跑function，是否有其他方式？

you.gender = input ("nn please enter your gender. (f/m/x)nn","s"); % input your gender here

gender = you.gender; % transefer a struct into a string

cig2 = isempty(gender); % if it is an empty input

cig1 = strcmp(gender,s1); % compare the input and the right answer

judcig1 = any(cig1); % use any to test is it any "1" in the answer

while ((judcig1 == 0) || (cig2 == 1))

fprintf("nn Error! Invalid input!nnPlease enter ""f"" for female, ""m"" for male, ""x"" for third sex.rn"); % error report

you.gender = input ("nn please enter your gender. (f/m/x)nn","s"); % input again

gender = you.gender; % transefer a struct into a string % it"s necessary to be here

cig2 = isempty(gender); % if it is an empty input

cig1 = strcmp(gender,s1); % compare the input and the right answer

judcig1 = any(cig1); % use any to test is it any "1" in the answer

if (judcig1 == 1) % until the any is "1", end this loop

break; % break the while loop

end

gender = gender; % save the right answer

end % end, when it"s the correct answer