Factorial in Rust

tausifshahbaz · Oct 11, 2017 · bd1a465 · bd1a465
1 parent 490a06a
commit bd1a465
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/math/factorial/Rust/factorial.rs b/math/factorial/Rust/factorial.rs
@@ -0,0 +1,16 @@
+use std::io;
+
+fn fact(n:i32) -> f64 {
+    match n {
+        0 => 1.0,
+        _ => n as f64 * fact(n-1)
+    }
+}
+
+fn main() {
+    println!("Enter a number");
+    let mut num = String::new();
+    io::stdin().read_line(&mut num);
+    let num : i32 = num.trim().parse().unwrap();
+    println!("factorial of {} = {}",num,fact(num));
+}