In a banking system, every customer receives reward points based on their position in the queue. The reward starts at 100 points and increases by 50 points for every subsequent customer. Write a program to calculate and output the reward for the 15th customer using a loop structure.

Implement a method calculateReward that calculates the reward points for a customer:

• Declare a variable reward and initialize it with 100.
• Use a for loop that runs from 1 to the value of customerPosition.
• On each iteration, add 50 to the reward variable.
• Return the final value of reward.

Example

calculateReward(1) => 100
calculateReward(2) => 150
calculateReward(15) => 800