这就是在 Swfit 中获得一个漂亮的unicode字符数组的方法：

var charArray: Array<Character> = Array(count: 100, repeatedValue: "?")

if最初用100个问号填充数组。

更新

以CChar为例：

var charArray: Array<CChar> = Array(count: 100, repeatedValue: 32) // 32 is the ascii space

这段Swift代码似乎分配了一些可用的东西作为一个大小为100的C字符数组（为了C互操作的需要）：

var addressBuffer = [Int8](count: 100, repeatedValue: 0)

// test it
addressBuffer[0] = 65 // 'A'
addressBuffer.withUnsafePointerToElements() { (addrBuffPtr : UnsafePointer<CChar>) -> () in
      // use pointer to memory
      var x0 = addrBuffPtr.memory
      println("The ASCII value at index 0 is \(x0)")

      var myCOpaquePointer = COpaquePointer(addrBuffPtr)
      // use C pointer for interoperation calls
}

• *Swift 4+**中hotpaw2的答案

var addressBuffer = [Int8](repeating: 0, count: 100)