infinity loop demonstration

src/roots.rc

@@ -0,0 +1,41 @@
+use std::io;
+
+/* Prints the roots of a quadratic equation with given coefficients,
+ * calculated using quadratic formula.
+ */
+
+fn main() {
+    println!("Quadratic Equation: ax^2 + bx + c = 0");
+
+    println!("Enter Value of a:");
+    let a = read_int();
+
+    println!("Enter Value of b:");
+    let b = read_int();
+
+    println!("Enter Value of c:");
+    let c = read_int();
+
+    let d = b*b-4*a*c;
+    if d<0 {
+        println!("No real roots exist");
+    } else {
+        let root_d = (d as f64).sqrt() as i32;
+        let r1 = (-b + root_d)/(2*a);
+        let r2 = (-b - root_d)/(2*a);
+
+        println!("Roots are {} and {}", r1,r2)
+    }
+}
+
+fn read_int() -> i32 {
+    let mut num = String::new();
+
+    io::stdin()
+        .read_line(&mut num)
+        .expect("Error Reading Number");
+
+    num.trim()
+        .parse::<i32>()
+        .unwrap()
+}

src/sum of digits in number

@@ -0,0 +1,14 @@
+fn main(){
+    let  x = 234;
+    let a = x%10;
+    println!("a={}",a);
+    let aa = x/10;
+    let s = aa%10;
+    println!("s={}",s);
+    let ss = aa/10;
+    let d = ss%10;
+    println!("d={}",d);
+    let f = a+s+d;
+    println!("the sum is ={}",f);
+
+}

src/trivial_demonstrations/demonstration_of_rust_features/infloop.rs

@@ -0,0 +1,11 @@
+fn main(){
+    let mut x=0;
+
+        loop{
+             x += 5;
+           if  x==100{
+               break;
+           }
+           println!("the value of x ={}",x);
+        }
+}