C++ Strings

What is a String?

In C++, strings are objects of the string class.

They are easier and safer than C-style character arrays.

Printing Strings

Accessing Characters

Use indexing to access characters.

String Length

Use .length() or .size().

Modifying Strings

Substring

Extract part of a string using substr().

String Input

Use getline() to read full lines.

Comparing Strings

Full Example

Why Strings are Important

• Used for text processing
• Safer than C-style strings
• Common in real applications

Common Mistakes

• Forgetting #include <string>
• Using cin instead of getline
• Mixing C-style and C++ strings

Practice

Create a string, modify it, and print its length and substring.

Need Help?