continuing ch 3 finished branch section

branches/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "branches"
+version = "0.1.0"

branches/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "branches"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

branches/src/main.rs

@@ -0,0 +1,30 @@
+fn main() {
+    // comments go above line attempting to comment
+    println!("Hello, world!");
+    example_funct();
+}
+
+// implicitly implied that a unit type is returned but neat to know it is allowed
+fn example_funct () -> () {
+    let number = 1;
+    // allowed bool statement
+    let run_if = number == 0;
+    // each if is a different arm or branch of the code path, will not check any other files once the first one is true
+    // must be a bool, rust will not accept if number or etc, must be converted into bool
+    if number != 0 {
+        println!("Number is non-zero")
+    // multiple ifs in a row
+    } else if run_if {
+        println!("Number is zero")
+    // in the   ase that all are flase
+    } else {
+        println!("Number is not real")
+    }
+
+    let condition = true;
+    // ifs can also be part of a statement to set a value depending on another value
+    let another_number = if condition { 7 } else { 0 };
+}
+
+// too many ifs or if elses can clutter code, use the match case instead
+// 5 ifs should mean the code needs to be refactored