Add Armstrong_Number.rs

Armstrong_Number/Armstrong_Number.rs

@@ -0,0 +1,48 @@
+// Armstrong number in Rust
+// 'N' is an armstrong number of 'l' digits if it is of the form
+// N = N1^l + N2^l + N3^l + ... + Nl^l
+// where Nk is the kth digit in N.
+
+use std::io;
+
+fn main(){
+    println!("Enter a number: ");
+    let mut nums = String::new();
+
+    io::stdin()
+        .read_line(&mut nums)
+        .expect("Failed to read line");
+
+    let mut num : i32 = nums.parse().unwrap();
+    let mut sum :i32 = 0;
+    let mut temp : i32 = num;
+    let mut len = 0;
+
+    while temp > 0{
+        len += 1;
+        temp /= 10;
+    }
+
+    temp = num;
+
+    while temp > 0{
+        let mut tempp = temp % 10;
+        sum += tempp.pow(len);
+        temp /= 10;
+    }
+    if sum==num{
+        println!("{} is an Armstrong number.", num);
+    }
+    else{
+        println!("{} is not an Armstrong number.", num);
+    }
+}
+// [Sample input 1] 
+// Enter a number: 153
+// [Sample output 1] 
+// 153 is an Armstrong number.
+
+// [Sample input 1] 
+// Enter a number: 58
+// [Sample output 1] 
+// 58 is an Armstrong number.