rust write 2days

rust_project/celToFah/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "celToFah"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

rust_project/celToFah/src/main.rs

@@ -0,0 +1,18 @@
+fn transFah(num: f64) -> f64 {
+    (num * 1.8) + 32.0
+}
+
+fn transCel(num: f64) -> f64 {
+    (num - 32.0) / 1.8
+}
+
+fn main() {
+    let x = 32.0;
+
+    println!("Fahrenheit is {}", transFah(x));
+
+    let y = 57.6;
+
+    println!("Celsius is {}", transCel(y));
+
+}

rust_project/fibonatch/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "fibonatch"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

rust_project/fibonatch/src/main.rs

@@ -0,0 +1,5 @@
+fn main() {
+    let array_smp = [0,1,1,2,3,5,8,13,21,34,55,89,144,233,377];
+
+    println!("Fibonatch No.4 is {}", array_smp[3])
+}

rust_project/loops/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "loops"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

rust_project/loops/src/main.rs

@@ -0,0 +1,49 @@
+fn smpRev() {
+    for number in (1..4).rev() {
+        println!("{}!", number);
+    }
+    println!("LIFTOFF!!!");
+}
+
+fn smpArray2() {
+    let a = [10, 20, 30, 40, 50];
+
+    for element in a.iter() {
+        println!("the value is: {}", element);
+    }
+}
+
+fn smpArray() {
+    let a = [10, 20, 30, 40, 50];
+    let mut index = 0;
+
+    while index < 5 {
+        println!("the value is: {}", a[index]);
+
+        index = index + 1;
+    }
+}
+
+fn smpLoop() {
+    let mut number = 3;
+
+    while number != 0 {
+        println!("{}!", number);
+
+        number = number + 1;
+    }
+
+    println!("LIFTOFF!!!");
+}
+
+fn main() {
+    /*
+    loop {
+        println!("again!");
+    }
+    */
+//    smpLoop();
+    smpArray();
+    smpArray2();
+    smpRev();
+}

rust_project/ownership/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

rust_project/ownership/src/main.rs

@@ -0,0 +1,23 @@
+fn smp_num() {
+    let x = 5;
+    let y = x;
+
+    println!("x = {}, y = {}", x, y);
+}
+
+fn smp_copy() {
+    let s1 = String::from("hello");
+    let s2 = s1.clone();
+
+    println!("s1 = {}, s2 = {}", s1, s2);
+}
+
+fn main() {
+    let mut s = String::from("hello");
+
+    s.push_str(", world");
+
+    println!("{}", s);
+
+    smp_copy();
+}

rust_project/variable/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "variable"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

rust_project/variable/src/main.rs

@@ -0,0 +1,153 @@
+fn smpLet() {
+    let condition = true;
+    let number = if condition {
+        5
+    } else {
+        6
+    };
+
+    println!("The value of number is: {}", number);
+}
+
+fn smpElseIf() {
+    let number = 6;
+
+    if number % 4 == 0 {
+        println!("number is divisible by 4");
+    } else if number % 3 == 0 {
+        println!("number is divisible by 3");
+    } else if number % 2 == 0 {
+        println!("number is divisible by 2");
+    } else {
+        println!("number is not divisible by 4, 3, or 2");
+    }
+}
+
+fn smpIf() {
+    let number = 7;
+
+    if number < 5 {
+        println!("condition was true");
+    } else {
+        println!("condition was false");
+    }
+}
+
+fn plus_one(x: i32) -> i32 {
+    x + 2
+}
+
+fn five() -> i32 {
+   5 
+}
+
+fn smpScorp() {
+    let x = 5;
+
+    let y = {
+        let x = 3;
+        x + 1
+    };
+
+    println!("The value of y is: {}", y);
+}
+
+fn another_function(x: i32, y: i32) {
+    println!("The value of x is: {}", x);
+    println!("The value of y is: {}", y);
+}
+
+fn smpArray() {
+    let a = [1, 2, 3, 4, 5];
+
+    let month = ["January", "February", "March", "April", "May", "June", "July",
+                "August", "September", "October", "November", "December"];
+
+    let first = a[0];
+    let second = a[1];
+}
+
+fn smpTup2() {
+    let x: (i32, f64, u8) = (500, 6.4, 1);
+
+    let five_hundred = x.0;
+
+    let six_point_four = x.1;
+
+    let one = x.2;
+
+    println!("The value of x is: {}", five_hundred);
+    println!("The value of y is: {}, {}", six_point_four, one);
+    println!("The value of z is: {}", one);
+}
+
+fn smpTup() {
+    let tup: (i32, f64, u8) = (500, 6.4, 1);
+
+    let (x, y, z) = tup;
+
+    println!("The value of y is: {}", y);
+}
+
+fn smpString() {
+    let c = 'z';
+    let z = 'ℤ';
+    let heart_eyed_cat = '😻';
+}
+
+fn smpBool() {
+    let t = true;
+
+    let f: bool = false;
+}
+
+fn smp_math() {
+    let x = 2.0;
+
+    let y: f32 = 3.0;
+
+    let sum = 5 + 10;
+
+    let difference = 95.5 - 4.3;
+
+    let product = 4 * 30;
+
+    let quotient = 56.7 / 32.2;
+
+    let remainder = 43 % 5;
+}
+
+fn shadowing() {
+    let x = 5;
+
+    let x = x + 1;
+
+    let x = x * 2;
+
+    println!("The value of x is: {}", x);
+}
+
+fn main() {
+    /*
+    let mut x = 5;
+    println!("The value of x is: {}", x);
+    x = 6;
+    println!("The value of x is: {}", x);
+    */
+    shadowing();
+    smpTup();
+    smpTup2();
+    another_function(5, 6);
+    smpScorp();
+
+    let x = five();
+
+    println!("The value of x is: {}", x);
+
+    let y = plus_one(5);
+
+    println!("The value of x is: {}", y);
+    smpIf();
+    smpElseIf();
+    smpLet();
+}