main files

Cargo.toml

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+[package]
+default-run = "main"
+name = "math_calculations"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "main"
+path = "src/main.rs"
+
+[[bin]]
+name = "cylinder"
+path = "src/cylinder.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+indicatif = "0.17.0"
+duration-string = "0.1.1"

src/cylinder.rs

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+use std::collections::HashMap;
+
+const SYSTEM_PI:f64 = std::f64::consts::PI;
+
+fn main() {
+ let mut current_iteration = 0;
+ let radius_iteration_amount = 4;
+ let height_iteration_amount = 4;
+ let radius_increment = 1.;
+ let height_increment = 1.;
+
+ let mut current_radius:f64 = 1.;
+ let mut current_height:f64 = 1.;
+
+ let baseline_height:f64 = current_height;
+
+ let mut hash = HashMap::new();
+
+ for _x in 1..radius_iteration_amount {
+ for _y in 1..height_iteration_amount {
+ hash.insert(current_iteration, calculate(current_radius, current_height));
+
+ current_height += height_increment;
+
+ // update iteration
+ current_iteration += 1;
+ }
+
+ // reset the height so we can iterate again
+ current_height = baseline_height;
+
+ // update radius to account for all combinations
+ current_radius += radius_increment;
+ }
+
+ // makes a mutable copy of the hashmap for memory safety
+ print_all_values(&mut hash);
+}
+
+fn calculate(radius:f64, height:f64) -> (f64, f64) {
+ let surface_area = (2 as f64 * SYSTEM_PI * radius * height) + 2 as f64 * SYSTEM_PI * radius.powi(2);
+ let volume = SYSTEM_PI * radius.powi(2) * height;
+
+ let result_tuple = (surface_area, volume);
+
+ let converted = convert_to_cm(result_tuple);
+
+ return converted;
+}
+
+fn convert_to_cm(tuple:(f64, f64)) -> (f64, f64) {
+ let root:f64 = 10.;
+
+ let cm_surface_area = tuple.0 / root.powi(2);
+ let cm_volume = tuple.1 / root.powi(3);
+
+ return (cm_surface_area, cm_volume);
+}
+
+fn print_all_values(map: &mut HashMap<i32, (f64, f64)>) {
+ for (key, value) in &*map {
+ //println!("Radius: {:} || Height: {:} || Final Surface Area: {:}", radius, height, result);
+ println!("Key: {:} || Final Surface Area: {:} || Final Volume: {:}", key, value.0, value.1);
+ }
+
+ map.clear();
+}