chore: week 2 assignment

submissions/week-2/task1.rs

@@ -0,0 +1,18 @@
+
+fn btc_value_in_usd(btc: f64, rate: f64) -> f64 {
+    // Expression block without a semicolon to return the computed value.
+    {
+        btc * rate
+    }
+}
+
+fn main() {
+    let btc = 0.25;
+    let rate = 65000.0;
+    let value_in_usd = btc_value_in_usd(btc, rate);
+
+    println!(
+        "{} BTC at rate ${} = ${} USD",
+        btc, rate, value_in_usd
+    );
+}

submissions/week-2/task2.rs

@@ -0,0 +1,22 @@
+fn mine_blocks(limit: u8) {
+    let mut mined = 0;
+
+    while mined < limit {
+        mined += 1;
+        println!("Mining block #{}", mined);
+
+        // Simulate mining difficulty — fake pause or iteration logic could go here.
+        // Example: adjusting difficulty every few blocks.
+        if mined % 5 == 0 {
+            println!("⛓️  Checkpoint reached at block #{}", mined);
+        } else {
+            println!("...continuing to next block");
+        }
+    }
+
+    println!("✅ Mining complete — total {} blocks mined!", mined);
+}
+
+fn main() {
+    mine_blocks(12);
+}

submissions/week-2/task3.rs

@@ -0,0 +1,31 @@
+
+
+/// Represents the different Bitcoin network types.
+enum Network {
+    Mainnet,
+    Testnet,
+    Regtest,
+}
+
+
+fn get_rpc_url(network: &Network) -> &str {
+    match network {
+        Network::Mainnet => "https://rpc.mainnet.bitcoin.org",
+        Network::Testnet => "https://rpc.testnet.bitcoin.org",
+        Network::Regtest => "http://localhost:18443",
+    }
+}
+
+fn main() {
+    let selected_network = Network::Testnet;
+
+    // Use match to print detailed information
+    match selected_network {
+        Network::Mainnet => println!("🌍 Mainnet selected — live Bitcoin network."),
+        Network::Testnet => println!("🧪 Testnet selected — use for testing and development."),
+        Network::Regtest => println!("⚙️ Regtest selected — local test environment."),
+    }
+
+    let rpc_url = get_rpc_url(&selected_network);
+    println!("RPC endpoint: {}", rpc_url);
+}