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tools/Calculator.cs

@@ -0,0 +1,34 @@
+using System;
+
+namespace AppStore
+{
+    /// <summary>
+    /// 提供基本数学运算功能的工具类
+    /// </summary>
+    public static class Calculator
+    {
+        /// <summary>
+        /// 加法运算
+        /// </summary>
+        public static double Add(double a, double b) => a + b;
+
+        /// <summary>
+        /// 减法运算
+        /// </summary>
+        public static double Subtract(double a, double b) => a - b;
+
+        /// <summary>
+        /// 乘法运算
+        /// </summary>
+        public static double Multiply(double a, double b) => a * b;
+
+        /// <summary>
+        /// 除法运算
+        /// </summary>
+        public static double Divide(double a, double b)
+        {
+            if (b == 0) throw new DivideByZeroException("除数不能为零");
+            return a / b;
+        }
+    }
+}