MATLAB Characters & Strings

🔤 MATLAB Characters & Strings

MATLAB is developed by MathWorks.

🔹 What Are Characters & Strings in MATLAB?

• Character array (char) → Uses single quotes ' '

• String data type (string) → Uses double quotes " "

1️⃣ Character Data Type (char)

A character array stores text as an array of characters.

🔸 Example 1: Single Character

Output

🔸 Example 2: Character Array (Text)

Output

🔸 Example 3: Character Array Size

Output

📌 Character strings are treated as arrays of characters.

2️⃣ String Data Type (string)

Strings were introduced to provide easier text handling.

🔸 Example 4: String Variable

Output

🔸 Example 5: String Length

Output

🔁 Difference Between char and string

🔗 String Concatenation

🔸 Using char

Output

🔸 Using string

Output

✂️ String Functions (Commonly Used)

🔹 Length

Output

🔹 Convert char ↔ string

🔹 Compare Strings

Output

🔹 Upper & Lower Case

Output

🎯 Interview Questions: Characters & Strings

🔹 Q1. What is the difference between char and string in MATLAB?

Answer:
char is a character array using single quotes, while string is a modern data type using double quotes with advanced features.

🔹 Q2. Which is recommended: char or string?

Answer:
string is recommended for new MATLAB programs.

🔹 Q3. How do you find the length of a string?

Answer:
Using strlength().

🔹 Q4. How do you concatenate strings?

Answer:
Using + for strings and [ ] for char arrays.

🔹 Q5. How do you compare two strings?

Answer:
Using strcmp().

🔹 Q6. Can a character array store multiple words?

Answer:
Yes, but all rows must have equal length.

🔹 Q7. How do you convert char to string?

Answer:
Using string() function.

✅ Summary

• ' ' → char

• " " → string

• string is easier & modern

• Many built-in string functions available