read and write from a file

Problem 6:
Three employees in a company are up for a special pay increase. You are given a file, say EX3_Data.txt, with
the following data:

Miller Andrew 65789.87 5
Green Sheila 75892.56 6
John Winter 74900.50 6.1

Each input line consists of an employee’s last name, first name, current salary, and percent pay increase. For
example, in the first input line, the last name of the employee is Miller, the first name is Andrew, the current
salary is 65789.87, and the pay increase is 5%. Write a program that reads data from the specified file and stores
the output in the file EX3_Output.dat. For each employee, the data must be output on one line in the following
form: firstName lastName updatedSalary. Format the output of decimal numbers to two decimal places as shown
below:

Miller Andrew 69079.36
Green Sheila 80446.11
John Winter 79469.43