Kotlin是否支持类似C语言的{ }作用域分隔符？

Absolutely! Kotlin fully supports creating independent scopes using curly braces {} just like C, and variables declared inside such a block are only accessible within that block—they're invisible outside of it.

Let me show you a direct equivalent to your C example, with a small note about Kotlin's syntax:

fun myFunc() {
    var i = 4
    // This curly brace block creates a new scope
    {
        val j = 5
        i += j // We can access variables from the outer scope here
        // ... other code
    }() // Important: In Kotlin, this block is a lambda, so we add () to execute it
    // Trying to access j here (like println(j)) will throw a compile error—j doesn't exist in this scope
}

You don't always need to use a lambda-style block though. Any natural code block (like those inside if statements, loops, or even function bodies) acts as a scope too. For example:

fun exampleWithIf() {
    val shouldExecute = true
    if (shouldExecute) {
        val tempVariable = "Only visible inside this if block"
        println(tempVariable)
    }
    // println(tempVariable) → Compile error! tempVariable isn't accessible here
}

Kotlin's scope rules align closely with C's in this regard, but it adds extra flexibility with lambdas and emphasizes immutable variables (using val instead of var where possible) to make code safer.

内容的提问来源于stack exchange，提问作者user5507535