Arithmetic/Integer: Difference between revisions

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@@ Line 2,715: / Line 2,715: @@
 Note that this code cannot be run within the [http://play.rust-lang.org Rust playpen] as it does not support console input.
-<lang rust>use std::io;
+<lang rust>use std::env;
 fn main() {
+    let args: Vec<_> = env::args().collect();
-    #![allow(unstable)] // Currently required whilst Rust 1.0 is finalised
-    let a: i32 = from_str(io::stdin().read_line().unwrap().trim().as_slice()).unwrap();
+    let a = args[1].parse::<i32>().unwrap();
-    let b: i32 = from_str(io::stdin().read_line().unwrap().trim().as_slice()).unwrap();
+    let b = args[2].parse::<i32>().unwrap();
-    let sum = a + b;
+    println!("sum:              {}", a + b);
-    println!("a + b = {0}" , sum);
+    println!("difference:       {}", a - b);
-    println!("a - b = {0}" , a - b);
+    println!("product:          {}", a * b);
-    println!("a * b = {0}" , a * b);
+    println!("integer quotient: {}", a / b); // truncates towards zero
-    println!("quotient of a / b = {0}" , a / b); // truncates towards 0
+    println!("remainder:        {}", a % b); // same sign as first operand
-    println!("remainder of a / b = {0}" , a % b); // same sign as first operand
 }</lang>