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how I do it. the function is called a string is passes a numbr

조회 수: 1(최근 30일)
Dezdi
Dezdi 19 Nov 2018
댓글: dpb 20 Nov 2018
how could I do this one
looks like
functionname('hello')
ans= hello1
functionname('john')
ans= john2
...
many thanks

  댓글 수: 1

dpb
dpb 19 Nov 2018
Which number, in particular? Any one, random, user-specified, sequential since last invocation as shown above (requires some extra logic to keep track of that and over what population if so)...???
So many questions, so little known... :)
s=sprintf('%s%d',str,randi(1000);
might give you some ideas, however...

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채택된 답변

Stephen Cobeldick
Stephen Cobeldick 20 Nov 2018
function out = myfun(inp)
persistent cnt
if nargin==0 || isempty(cnt)
cnt = 0;
end
cnt = cnt+1;
assert(cnt<=5,'You already have five words')
out = sprintf('%s%d',inp,cnt);
end
And tested:
>> myfun('anna')
ans = anna1
>> myfun('bob')
ans = bob2
>> myfun('cathy')
ans = cathy3
>> myfun('david')
ans = david4
>> myfun('evalyn')
ans = evalyn5
>> myfun('frog')
error: You already have five words

  댓글 수: 1

Dezdi
Dezdi 20 Nov 2018
thank you
Is there any way to write message here not just post?

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추가 답변(2개)

Luna
Luna 20 Nov 2018
Hello Dezdi,
You can do it by first collecting your inputs in a cell array and then call your function in a for loop with 5 elements.
inputStr = {'John','Mary','Kayle','Adam','David'};
for i = 1:5
out = myFunc(inputStr,i)
end
function outputStr = myFunc(inputStr,i)
outputStr = [inputStr{i}, sprintf('%d',i)];
end

Preethi
Preethi 20 Nov 2018
hi,
check this
function test_preethi(str)
persistent i
if isempty(i)
i=1;
else
if i <=5
sprintf('%s%d',str,i)
i=i+1 ;
else
sprintf('limit reached')
end
end

  댓글 수: 3

Stephen Cobeldick
Stephen Cobeldick 20 Nov 2018
The question requests "...and returns the resulting string". Your code does not return anything.
Dezdi
Dezdi 20 Nov 2018
thank you it works for me sorry I am new here can't accept all of you answers.
dpb
dpb 20 Nov 2018
This particular function only "works" in that it creates the string internal to the function but you can't get at the result.
The use of persistent is good in saving the previous value, unfortunately the function has no mechanism by which the variable can be reset/re-initialized so without external intervention once the sequence is full, there's no going forward...details, details! :)

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