4. Reference Parameter Update

Write a function named update that takes an integer x by reference and an integer delta by value.
The function must update x by adding delta to it.

In main(), read the input values, call the function, and print the updated value of x.

Important rules:

• The function must modify x using a reference parameter.
• Do not print anything inside the function.
• Printing must be done only in main().
   

Example: 

Input:

10 4

Output:

14

Constraints:

• x and delta are signed 32-bit integers
• Overflow behavior is undefined and does not need to be handled
• The function must use a reference parameter to update x