Snake_case is called snake-shaped nomenclature, which is generally used to name variable names. Snake case requires (underscores) between words or abbreviations in the phrase , such as user_name, snakecase etc.
camelCase is called camel case , Is also a variable naming rule. camelCase the first letter of the first word requires little
to write back word capitalized, for example: fileName, lineNumber, camelCase etc.
One last time, your text compiler is really hard to use. The space Tab key automatically adds format to me. . Really convinced