first commit

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.lock

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

Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "hello"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+
+[[bin]]
+name = "hello"
+path = "hello.rs"

arr.rs

@@ -0,0 +1,9 @@
+fn main() {
+ let arr = [4,5,6,7];   
+ let first = arr[0];
+ println!("first {}", first);
+ for i in 0..4 {
+     println!("[{}] - {}", i, arr[i]);
+ }
+ println!("len {}", arr.len());
+}

fun.rs

@@ -0,0 +1,8 @@
+fn sqrt(x : f64) -> f64 {
+    return x * x;
+}
+fn main() {
+    let inn = 33;
+    let sqrt = sqrt(inn as f64);
+        println!("sqrt of {} is {}", inn,  sqrt);
+}

hello.rs

@@ -0,0 +1,7 @@
+fn main()
+{
+    let answer = 43;
+    println!("hello {}", answer);
+    assert_eq!(answer, 42);
+}
+

loop.rs

@@ -0,0 +1,5 @@
+fn main(){
+    for i in 0..4 {
+        println!("-> {}", i);
+    }
+}

loop2.rs

@@ -0,0 +1,7 @@
+fn main(){
+    let mut sum = 0.0;
+    for i in 0..4 {
+        sum += i as f64;
+    }
+    println!("sum is {}", sum);
+}

loop3.rs

@@ -0,0 +1,9 @@
+fn main(){
+    for i in 0..4 {
+        if i % 2 == 0 {
+            println!("even {}", i);
+        } else {
+           println!("odd {}", i);
+        }
+    }
+}

slice.rs

@@ -0,0 +1,14 @@
+fn sum(arr: &[i32]) -> i32 {
+    let mut sum = 0;
+    for i in 0..arr.len() {
+        sum += arr[i];
+    }
+    sum
+}
+
+fn main() {
+    let arr = [4, 6, 8, 9, 11];
+    let res = sum(&arr);
+    println!("sum is {}", res);
+    println!("arr is {:?}", arr);
+}