1, capital letters: capital letters, majuscule. Example:
( 1)“Ecu”？ Used to be. Printed? Are you online? Lower? Case? Quite? Than? Capital? Letters. ? Ecu is printed in lowercase letters instead of uppercase letters.
2 in? This? Writing? Some? Punctuation marks? And then what? Capital? Letters? Really? Have you been there? Left? Get out. In this article, some punctuation and capital letters are missing.
(3) capital? a； ? Great? a； ? A lot? Medieval? Manuscript? Is it? Are you online? majuscule？ Script. Capital a; Capital a; Many medieval manuscripts were written in capital letters.
2, lowercase letters: lowercase examples:
(1) lowercase? Letters? Are you online? That? Words? Is it? Left? No change. Lowercase letters in the text remain unchanged.
(2) them? Simple? Convert? That? String? Where to? All of them? Capitalize? Or? All of them? Lowercase? Letters? They are. ? They just convert all strings into uppercase or lowercase letters respectively.
(3) the variable' underline? And then what? That? Name? Yes? Variable? Start? With what? Answer? Lowercase? Letter. Underscores and variable names that start with lowercase letters.
Extended data:
Capital letters or capital letters are one of the writing forms of many pinyin letters, such as A, B, C and so on. The height and width of uppercase and lowercase fonts are obviously different, but in some languages, there is no case difference. In the early days of invention, there was only one font for Latin letters, that is, capital letters.
References:
Baidu Encyclopedia _ capital letters? Baidu Encyclopedia _ lowercase letters