/*
Convert radians to degrees and degrees to radians.
Uses Rust's standard library:
- std::f64::consts::PI provides a precise value for π.
- The conversion formulas follow the standard mathematical relationships:
degrees = radians * (180 / PI)
radians = degrees * (PI / 180)
The program demonstrates clear structure:
- Small, focused functions
- Descriptive names
- Comments explaining intent
*/
use std::f64::consts::PI;
// Convert radians to degrees.
// Multiplies the input by the ratio between degrees and radians.
fn to_degrees(radians: f64) -> f64 {
radians * (180.0 / PI)
}
// Convert degrees to radians.
// Multiplies the input by the ratio between radians and degrees.
fn to_radians(degrees: f64) -> f64 {
degrees * (PI / 180.0)
}
fn main() {
// Example values
let rad_value: f64 = 1.0; // 1 radian
let deg_value: f64 = 180.0; // 180 degrees
// Perform conversions
let rad_to_deg: f64 = to_degrees(rad_value);
let deg_to_rad: f64 = to_radians(deg_value);
// Display results
println!("Radians: {:.6} -> Degrees: {:.6}", rad_value, rad_to_deg);
println!("Degrees: {:.6} -> Radians: {:.6}", deg_value, deg_to_rad);
}
/*
run:
Radians: 1.000000 -> Degrees: 57.295780
Degrees: 180.000000 -> Radians: 3.141593
*/
