Solution for #3

- Implemented to rust.

challenge/fizz_buzz/main.rs

@@ -0,0 +1,24 @@
+use std::io;
+
+fn fizz_buzz(n : i32) {
+    for i in 1..n+1 {
+        if i % 3 == 0 && i % 5 == 0 {
+            println!("FizzBuzz");
+        } else if i % 3 == 0 {
+            println!("Fizz");
+        } else if i % 5 == 0 {
+            println!("Buzz");
+        } else {
+            println!("{}", i);
+        }
+    }
+}  
+
+fn main() {
+    // User integer input
+    println!("Enter a number: ");
+    let mut input = String::new();
+    io::stdin().read_line(&mut input).expect("Failed to read line");
+    let n: i32 = input.trim().parse().expect("Please type a number!");
+    fizz_buzz(n);
+}