What is an Uppercase String?

An uppercase string refers to a string where all characters are in capital letters (A-Z). For example:

"hello" → "HELLO"

"abc123" → "ABC123"

Why Use Uppercase Strings?

Standardization: Ensuring consistency in input data (e.g., converting usernames like "user123" to "USER123").
Formatting: Used in titles, headers, or to emphasize specific sections of text.
Data Validation: Ensuring case-insensitive comparisons by converting strings to uppercase before comparison.
Accessibility: Enhancing readability or giving a specific visual appeal for design purposes.