### **1. Print Name and Age**

Write a program that stores your name and age in variables and prints them in a single line.
**Example Output:**

```
My name is Alice and I am 25 years old.

```

***

#### **2. Swap Two Variables**

Write a program to swap the values of two variables `a` and `b`.
**Example:**

```
Input: a = 10, b = 20
Output: a = 20, b = 10

```

***

#### **3. String Concatenation**

Given two strings `first` and `last`, join them with a space between.
**Example:**

```
Input: first = "Data", last = "Science"
Output: "Data Science"

```

***

#### **4. Find String Length**

Write a program that takes a string `s` and prints its length.
**Example:**

```
Input: "Python"
Output: 6

```

***

#### **5. Extract Substring**

Given a string `word = "datascience"`, print only `"data"`.
**Expected Output:**

```
data

```

***

#### **6. Convert to Uppercase**

Take a string input and print it in uppercase.
**Example:**

```
Input: "hello world"
Output: "HELLO WORLD"

```

***

#### **7. Count Occurrences of a Character**

Write a program that counts how many times `'a'` appears in a string.
**Example:**

```
Input: "banana"
Output: 3

```

***

#### **8. Replace a Word**

Given a sentence, replace `"apple"` with `"orange"`.
**Example:**

```
Input: "I like apple"
Output: "I like orange"

```

***

#### **9. Check Substring**

Check if the word `"code"` exists in a given string.
**Example:**

```
Input: "I love to code in Python"
Output: True

```

***

#### **10. Reverse a String**

Write a program that reverses a string.
**Example:**

```
Input: "python"
Output: "nohtyp"

```

***

#### **11. Remove Whitespace**

Remove all leading and trailing spaces from a string.
**Example:**

```
Input: "   Hello World   "
Output: "Hello World"

```

***

#### **12. Format String**

Given variables `name = "Alice"` and `score = 95`, print:

```
Alice scored 95 marks.

```

***

#### **13. Repeat String**

Write a program to print `"ha"` 5 times.
**Output:**

```
hahahahaha

```

***

#### **14. First and Last Character**

Write a program to print the first and last characters of a string.
**Example:**

```
Input: "Python"
Output: P n

```

***

#### **15. Capitalize First Letter**

Write a program that converts `"hello world"` into `"Hello world"`.
**Expected Output:**

```
Hello world

```

Write a program that stores your name and age in variables and prints them in a single line.

Write a program to swap the values of two variables 

Input: a = 10, b = 20
Output: a = 20, b = 10


Input: first = "Data", last = "Science"
Output: "Data Science"


Take a string input and print it in uppercase.

Input: "hello world"
Output: "HELLO WORLD"


Write a program that counts how many times 

Input: "I like apple"
Output: "I like orange"


Input: "I love to code in Python"
Output: True


Remove all leading and trailing spaces from a string.

Input: "   Hello World   "
Output: "Hello World"


Write a program to print the first and last characters of a string.