Exercise 1: Basic Arithmetic Operations
Write a C program that does the following:

Declares two integer variables, a and b, and initializes them with values of your choice.
Calculates and prints the sum, difference, product, and quotient of a and b.

Exercise 2: Modulo Operation
Write a C program that calculates and prints the remainder of a divided by b using the modulo operator.

Exercise 3: Compound Assignment
Write a C program that demonstrates the use of compound assignment operators (e.g., +=, -=) to update the values of variables a and b. Increase a by 3 and decrease b by 2 using compound assignment operators, and then print the updated values.

Exercise 4: Precedence and Parentheses
Write a C program that demonstrates the importance of operator precedence and the use of parentheses. Calculate and print the result of the following expression: 2 * (5 + 3) / 4.

Exercise 5: Currency Conversion

Write a C program that performs currency conversion from US Dollars (USD) to Euros (EUR) and British Pounds (GBP). The program should do the following:

/* Prompt the user to enter an amount in USD */
Accept as parameter an amount in USD
Calculate the equivalent amount in EUR and GBP using the following exchange rates:
1 USD = 0.85 EUR
1 USD = 0.73 GBP
Display the original amount in USD and the converted amounts in EUR and GBP.


Exercise 6: Voter Eligibility

Write a C program that determines whether a person is eligible to vote based on their age. The program should:

Prompt the user to enter their age.
Use an equality operator to check if the age is equal to or greater than 18.
Display a message indicating whether the person is eligible to vote or not.