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C# Accessing Strings

In C#, you can access individual characters or substrings within a string using indexing and methods like Substring(). Strings are zero-indexed, meaning the first character is at index 0.

Key Topics

1. Character Access

Example: Accessing Characters by Index

string message = "Hello";
char firstChar = message[0];
Console.WriteLine(firstChar);  // Outputs: H

2. Using Substring()

Example: Extracting a Substring

string message = "Hello, World!";
string sub = message.Substring(7, 5);
Console.WriteLine(sub);  // Outputs: World

3. Iterating Over a String

Example: Looping Through Each Character

string word = "Hello";
foreach(char c in word)
{
    Console.WriteLine(c);
}

Output:

H e l l o

Key Takeaways

  • Use index notation string[index] to access characters.
  • The Substring() method extracts parts of a string.
  • You can iterate over a string using loops.
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