How would I ask the user to input another option for cash flow and interest rate, then compare the two or three additional options?

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johnmurdock 2019-5-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/459936-how-would-i-ask-the-user-to-input-another-option-for-cash-flow-and-interest-rate-then-compare-the-t

clc;
clear;
close all;
 
numberYears= input('Planning Horizon Length\n--> ');
cashflows = zeros(numberYears, 1);
for k = 1:numberYears
   cashflows(k) = input(sprintf('Cash flow for year %d\n--> ', k));
end
n=length(cashflows);
for i =1:n
    x(i) = i-1;
end
 
ir = input('Input Interest Rate (%)\n-->');
 
PW= 0;
i = (ir/100)+1;
bar(x,cashflows,0.25)
 %Equation for PW analysis
for j= 1:length(i)
    
    PW=0;
    for t= 1:n
        PW=PW+cashflows(t)*i(j)^(-x(t));
        PWA(j,t)=PW;
    end
end
 %plots CF diagram
figure(1)
hold on
plot(x,PWA,'-x','LineWidth',2)
legend('Cash Flow',num2str(ir),'Location','southeast')
% plot your data
ylabel('Present Worth')
xlabel('Year')
check1 = PWA(end)>0;
answer = ['N','Y'];
fprintf('Is the investment worthwhile? %c\n',answer(check1+1))