/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Tokenize strings.
using System;
public class TokenizeDemo {
public static void Main() {
string[] input = {
"100 + 19",
"100 / 3.3",
"-3 * 9",
"100 - 87"
};
char[] seps = {' '};
for(int i=0; i < input.Length; i++) {
// split string into parts
string[] parts = input[i].Split(seps);
Console.Write("Command: ");
for(int j=0; j < parts.Length; j++)
Console.Write(parts[j] + " ");
Console.Write(", Result: ");
double n = Double.Parse(parts[0]);
double n2 = Double.Parse(parts[2]);
switch(parts[1]) {
case "+":
Console.WriteLine(n + n2);
break;
case "-":
Console.WriteLine(n - n2);
break;
case "*":
Console.WriteLine(n * n2);
break;
case "/":
Console.WriteLine(n / n2);
break;
}
}
}
}