Rust Program: Calculate employee annual salary

Rust Structs and Enums: Exercise-7 with Solution

Write a Rust program that defines a struct Employee with fields id, name, and salary. Now write a function to calculate an employee's annual salary.

Sample Solution:

Rust Code:

// Define a struct named 'Employee' with fields: id, name, and salary
struct Employee {
    id: u32,
    name: String,
    salary: f64,
}

// Define a function to calculate the employee's annual salary
fn calculate_annual_salary(employee: &Employee) -> f64 {
    // Assuming there are 12 months in a year
    employee.salary * 12.0
}

fn main() {
    // Create an employee instance
    let employee = Employee {
        id: 101,
        name: String::from("Merrill Jamal"),
        salary: 61000.0,
    };

    // Calculate the employee's annual salary using the function
    let annual_salary = calculate_annual_salary(&employee);

    // Print the employee's annual salary
    println!("Employee {}'s (id = {}) annual salary : ${:.2}", employee.name, employee.id, annual_salary);
}

Output:

Employee Merrill Jamal's (id = 101) annual salary : $732000.00

Explanation:

Here is a brief explanation of the above Rust code:

• struct Employee { ... }: Defines a struct named "Employee" with fields 'id', 'name', and 'salary'.
• fn calculate_annual_salary(employee: &Employee) -> f64 { ... }: Defines a function named calculate_annual_salary that takes a reference to an "Employee" instance as a parameter and returns a 'f64' representing the employee's annual salary. Inside the function, the monthly salary is multiplied by 12 to get the annual salary.
• fn main() { ... }: This is the entry point of the program.
• Inside main():
• An "Employee" instance named 'employee' is created with sample details.
• The "calculate_annual_salary()" function is called with a reference to the 'employee' instance to calculate the annual salary.
• The calculated annual salary is printed using println! macro.

Rust Code Editor:

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