Initial commit

cs3/C_Sharp_3_3/Program.cs

@@ -0,0 +1,46 @@
+namespace C_Sharp_3_3
+{
+    public class Program
+    {
+        static void Main(string[] args)
+        {
+            int c, r;
+            Console.Write("请输入总只数");
+            int h = int.Parse(Console.ReadLine());
+            int f = 1;
+            while (f % 2 != 0)
+            {
+                Console.Write("请输入总脚数（必须是偶数）");
+                f = int.Parse(Console.ReadLine());
+            }
+            // 循环
+            bool solution = false;
+            for (c = 0; c <= h; c++)
+            {
+                r = h - c;
+                if (2 * c + 4 * r == f)
+                {
+                    Console.WriteLine("方法一：鸡有{0}只，兔有{1}只", c, r);
+                    solution = true;
+                }
+            }
+            if (!solution)
+            {
+                Console.WriteLine("方法一无解");
+            }
+            // 解方程
+            r = f / 2 - h;
+            c = h - r;
+            solution = false;
+            if (c >= 0 && r >= 0)
+            {
+                Console.WriteLine("方法二：鸡有{0}只，兔有{1}只", c, r);
+                solution = true;
+            }
+            if (!solution)
+            {
+                Console.WriteLine("方法二无解");
+            }
+        }
+    }
+}