Simple question with string

I have a string, and I want to add a character after the 4th element of this string, for example:

str1='noteook';

I want to obtain

str2='notebook';

so placing a 'b' after the 4th character. I want to do this starting from the beginning and not from the end of the string, since I have to do this for more strings which have different length (while the element I want to insert is always the 5th one). thanks!

Answer 1

[Adam]

strcat( str1(1:4), 'b', str1(5:end) )

will do the job, amongst other alternatives, with the obvious generalisation of replacing the hard-coded 4, 5

[aurc89]

Thanks!