What are curly braces used for?

Curly braces {} are used in various programming languages for different purposes. Here are some common uses:

1. Block of Code: In languages like Java, C, and JavaScript, curly braces define a block of code, such as the body of a function, loop, or conditional statement.

   if (condition) {
       // code block
   }

2. Object Literals: In JavaScript, curly braces are used to define object literals.

   const person = {
       name: "Alice",
       age: 30
   };

3. String Formatting: In Python, curly braces are used in f-strings for string interpolation, allowing you to embed expressions inside string literals.

   name = "Alice"
   print(f"Hello, {name}!")

4. Sets and Dictionaries: In Python, curly braces are used to define sets and dictionaries.

   my_set = {1, 2, 3}
   my_dict = {"key": "value"}

The specific use of curly braces can vary depending on the programming language and context.