add element to cell with function in matlab

To add an element to a cell array in Matlab using a function, you can use indexing and appending. Here's an example function that adds an item to a cell array:

main.m
function newCellArray = addElementToCell(oldCellArray, newItem)
% oldCellArray: the cell array to which the element is to be added
% newItem: the element to be added

newCellArray = [oldCellArray, {newItem}];
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This function takes in a cell array oldCellArray and a new item newItem. It then uses the concatenation operator ([]) to append {newItem} to the end of oldCellArray. Note that we use curly braces {} to enclose newItem in order to convert it to a cell array.

Here's an example usage of the function:

main.m
>> oldCellArray = {'apple', 'banana', 'orange'};
>> newItem = 'pear';
>> newCellArray = addElementToCell(oldCellArray, newItem);
>> disp(newCellArray);
   'apple'    'banana'    'orange'    'pear'
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In this example, we start with a cell array oldCellArray that contains the strings 'apple', 'banana', and 'orange'. We then call the addElementToCell function with oldCellArray and the string 'pear'. The function appends 'pear' to the end of oldCellArray, resulting in the new cell array newCellArray. We then display newCellArray using the disp function.