Hi im trouble with this program question

Program is done in C

MUST USE FGETS INSTEAD OF SCANF

Multipurpose Payroll System Write a program that calculates pay for either an hourly paid worker or a salaried worker. Hourly paid workers are paid their hourly pay rate times the number of hours worked. Salaried workers are paid their regular salary plus any bonus they may have earned. The program should declare two structures for the following data:

Hourly Paid:

Name

Gender

HoursWorked

HourlyRate

Salaried:

Name

Age

Salary

Bonus

The program should also declare a union with two members. Each member should be a structure variable: one for the hourly paid worker and another for the salaried worker. The program should ask the user whether he or she is calculating the pay for an hourly paid worker or a salaried worker. Regardless of which the user selects, the appropriate member of the union will be used to store the data that will be used to calculate the pay.

input Validation:

a) Do not accept negative numbers.

b) Do not accept values greater than 80 for HoursWorked.

c) Ensure to securely process numeric values