matlab程序设计流程控制结构

Question

![img]( https://img-mid.csdnimg.cn/release/static/image/mid/ask/067660189926177.jpg 'IMG_20210826_203036.jpg'）怎么做

Answer 1

s = 0;
n = 0;
a = input('请输入数字2 3 4 0 \n');
while a ~= 0 
    s = s + a;
    n = n + 1;
    a = input('请输入数字2 3 4 0 \n');
end
x = s / n

%% For 循环
x = 0:0.05:2*pi;
y1 = sin(x);
y2 = 0;
for ii = 1:30
    y2 = y2 + (-1)^(ii-1)*(x).^(2*ii-1)./factorial(2*ii-1);
end
figure
plot(x,y1,x,y2,'r--')

%% While 循环
x = 0:0.05:2*pi;
y1 = sin(x);
y2 = 0;
ii = 1;
while ii <= 30
    y2 = y2 + (-1)^(ii-1)*(x).^(2*ii-1)./factorial(2*ii-1);
    ii = ii+1;
end
figure
plot(x,y1,x,y2,'r--')

%% 函数方法
x = 0:0.05:2*pi;
y1 = sin(x);
y2 = 0;
ii = 1;
fn = @(ii)  (-1)^(ii-1)*(x).^(2*ii-1)./factorial(2*ii-1);
y2 = arrayfun( fn,1:30,'UniformOutput',false )
y2 = sum(cell2mat(y2'));

figure
plot(x,y1,x,y2,'r--')