Arithmetic/Integer: Difference between revisions

Content added Content deleted

Inline

@@ Line 2,816: / Line 2,816: @@
 =={{header|Kotlin}}==
-<syntaxhighlight lang="scala">// version 1.1
+<syntaxhighlight lang="kotlin">
+import kotlin.math.pow // not an operator but in the standard library
-fun main(args: Array<String>) {
+fun main() {
-    val r = Regex("""-?\d+[ ]+-?\d+""")
+    val r = Regex("""-?[0-9]+\s+-?[0-9]+""")
+    print("Enter two integers separated by space(s): ")
-    while(true) {
+    val input: String = readLine()!!.trim()
-        print("Enter two integers separated by space(s) or q to quit: ")
-        val input: String = readLine()!!.trim()
+    val index = input.lastIndexOf(' ')
+    val a = input.substring(0, index).trimEnd().toLong()
-        if (input == "q" || input == "Q") break
-        if (!input.matches(r)) {
+    val b = input.substring(index + 1).toLong()
+    println("$a + $b = ${a + b}")
-            println("Invalid input, try again")
-            continue
+    println("$a - $b = ${a - b}")
-        }
+    println("$a * $b = ${a * b}")
+    println("$a / $b = ${a / b}")  // rounds towards zero
-        val index = input.lastIndexOf(' ')
+    println("$a % $b = ${a % b}")  // if non-zero, matches sign of first operand
-        val a = input.substring(0, index).trimEnd().toLong()
-        val b = input.substring(index + 1).toLong()
+    println("$a ^ $b = ${a.toDouble().pow(b.toDouble())}")
+}
-        println("$a + $b = ${a + b}")
-        println("$a - $b = ${a - b}")
-        println("$a * $b = ${a * b}")
-        if (b != 0L) {
-            println("$a / $b = ${a / b}")  // rounds towards zero
-            println("$a % $b = ${a % b}")  // if non-zero, matches sign of first operand
-        }
-        else {
-            println("$a / $b = undefined")
-            println("$a % $b = undefined")
-        }
-        val d = Math.pow(a.toDouble(), b.toDouble())
-        print("$a ^ $b = ")
-        if (d % 1.0 == 0.0) {
-            if (d >= Long.MIN_VALUE.toDouble() && d <= Long.MAX_VALUE.toDouble())
-                println("${d.toLong()}")
-            else
-                println("out of range")
-        }
-        else if (!d.isFinite())
-            println("not finite")
-        else
-            println("not integral")
-        println()
-    }
 }</syntaxhighlight>
 {{out}}
 <pre>
-Enter two integers separated by space(s) or q to quit: 2 63
+Enter two integers separated by space(s): 2 63
 + 63 = 65
 - 63 = -61
@@ Line 2,866: / Line 2,843: @@
 / 63 = 0
 % 63 = 2
-^ 63 = 9223372036854775807
+^ 63 = 9.223372036854776E18
-Enter two integers separated by space(s) or q to quit: -3 50
--3 + 50 = 47
--3 - 50 = -53
--3 * 50 = -150
--3 / 50 = 0
--3 % 50 = -3
--3 ^ 50 = out of range
-Enter two integers separated by space(s) or q to quit: q
 </pre>