Create a program that asks a user to input a number and then finds the sum of digits of the number using recursion. for example 341 = 3+4+1 = 8

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123
123 2018-3-17
评论： Diego Sánchez Saldaña 2020-12-30
This is what i have but it wont compute anything..
number = input('Enter a number here:');
function result = mySum(numbers)
numbers = num2str(number) - '0';
if length(numbers) == 0
result = 0;
else
result = numbers(end) + mySum(numbers(1:end - 1));
end
end

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采纳的回答

vijaya lakshmi
vijaya lakshmi 2018-3-20
Hi Matt,
You have written function definition but missed to call the function 'mySum', that is why it is unable to compute anything.
You can refer to the following code snippet to achieve this
numbers=input('get a number');
numbers = num2str(numbers);
out=mySum(numbers)
function result = mySum(numbers)
result=0;
for i=1:length(numbers)
result=str2double(numbers(end))+mySum(numbers(1:end-1));
end
end
Hope this helps you!

更多回答（1 个）

Saptarshi Neogi
Saptarshi Neogi 2020-8-30
编辑：Saptarshi Neogi 2020-8-30
% This program does not require any inbuilt functions.
function x = digit_sum(n)
x=0;
if n>0
x=mod(n,10)+digit_sum(floor(n./10));%recursive
end

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