StringBuilder。C# 中的字符[]属性
原文:https://www . geeksforgeeks . org/stringbuilder-chars-property-in-c-sharp/
StringBuilder。字符[Int32]属性用于获取或设置该实例中指定字符位置的字符。
语法:public char this[int index]{ get；设置；} 这里的索引是人物的位置。
属性值:该属性返回位置索引处的 Unicode 字符。
异常:
- argumentoutofrangerexception:如果在设置字符时索引超出了此实例的界限。
- indexout of range exception:如果获取字符时索引超出此实例的界限。
以下程序说明了上述属性的使用:
例 1:
// C# program demonstrate
// the Chars[Int32] Property
using System;
using System.Text;
class GFG {
// Main Method
public static void Main(String[] args)
{
// create a StringBuilder object
// with a String pass as parameter
StringBuilder str =
new StringBuilder("GeeksforGeeks");
// print string
Console.WriteLine("String is "
+ str.ToString());
// loop through string
// and print every Character
for (int i = 0; i < str.Length; i++) {
// get char at position i
char ch = str[i];
// print char
Console.WriteLine("Char at position "
+ i + " is " + ch);
}
}
}
Output:
String is GeeksforGeeks
Char at position 0 is G
Char at position 1 is e
Char at position 2 is e
Char at position 3 is k
Char at position 4 is s
Char at position 5 is f
Char at position 6 is o
Char at position 7 is r
Char at position 8 is G
Char at position 9 is e
Char at position 10 is e
Char at position 11 is k
Char at position 12 is s
例 2:
// C# program demonstrate
// the Chars[Int32] Property
using System;
using System.Text;
class GFG {
// Main Method
public static void Main(String[] args)
{
// create a StringBuilder object
StringBuilder str = new StringBuilder();
// add the String to StringBuilder Object
str.Append("Geek");
// get char at position 1
char ch = str[1];
// print the result
Console.WriteLine("StringBuilder Object"
+ " contains = " + str);
Console.WriteLine("Character at Position 1"
+ " in StringBuilder = " + ch);
}
}
Output:
StringBuilder Object contains = Geek
Character at Position 1 in StringBuilder = e
参考:
版权属于：月萌API www.moonapi.com，转载请注明出处
