How to solve the vertcat problem when using a loop function?

Question

Cassie Guo 2016-3-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/275627-how-to-solve-the-vertcat-problem-when-using-a-loop-function

回答： Walter Roberson 2016-3-27

I have a problem needs to compute amount of money in a savings account given an initial balance and an annual interest rate of 2.5%.for a number of years starting from next year (2017) and ending at an end year given by the user. And store the answer in two column vector with "Year Balance"

 clear
 clc
 %read and verify user input (skipped for this example)
 balance = input('Please enter the initial balance:') ;
 useryear = input('Please enter the year:');
 %Check user input
 while balance <= 0,
    disp('Error, the balance should be greater than zero')
 end
 while useryear < 2017,
    disp('Error, the end year should be greater than 2017')
 end
 numberOfYears = useryear - 2017 + 1;
 % initialize interest rate
 interestRate = 0.025;
 % formula
 % new balance = old balance + old balance * interest rate
 for k = 1:numberOfYears
    newBalance = balance + balance * interestRate;
    allbalance(k) = newBalance;
 end    
 fprintf('Year\t Balance\n')
 fprintf('%d\t %.2f\n',[2017:useryear;allbalance(k)]);

After running this code, it shows

Error using vertcat
Dimensions of matrices being concatenated are not consistent.
Error in Exercise2 (line 38)
fprintf('%d\t %.2f\n',[2017:useryear;allbalance(k)]);".