Access String
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You can access a string’s individual characters by indexing into the string using the square bracket notation ([ ]). The indexing is zero-based, meaning that the first character has an index of 0, the second character has an index of 1, and so on.
Here’s an example of how to access the characters of a string in C#:
string str = "Hello, world!";
char firstChar = str[0];
char secondChar = str[1];
char lastChar = str[str.Length - 1];
Console.WriteLine($"First character: {firstChar}"); // Output: "First character: H"
Console.WriteLine($"Second character: {secondChar}"); // Output: "Second character: e"
Console.WriteLine($"Last character: {lastChar}"); // Output: "Last character: !"
In the example above, the variables firstChar, secondChar, and lastChar are assigned the values of the first, second, and last characters of the string str, respectively. The length of the string can be obtained using the Length property of the string object, which returns the number of characters in the string.
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