Capitalize only the first letter of a character

How to Capitalize only the first letter of a character ? upper function capitalize all the letters. I want only to make this change ONLY for the first letter.

Thank you in advance

Answer 1

[David Hill]

Likely a better way.

a='my name';
a(1)=upper(a(1));

Answer 2

[Ive J]

str = "dogs are better than cats";
regexprep(str ,'(\<\w{1})', '${upper($1)}')

    "Dogs Are Better Than Cats"