85 lines
2.2 KiB
C#
85 lines
2.2 KiB
C#
using System;
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namespace Lesson7
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{
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class Program
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{
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static int Compare(int a, int b)
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{
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int max = (a > b) ? a : b;
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return max;
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}
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static float[] Circle(float r)
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{
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float pi = 3.14f;
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float perimeter = 2 * pi * r;
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float area = pi * (r * r);
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return new float[] { perimeter, area };
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}
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static int[] ComplexCompare(int[] a)
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{
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int sum = 0, min = a[0],max = a[0],avg=0;
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for (int i = 0; i < a.Length; i++)
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{
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sum += a[i];
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if (a[i] > max)
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{
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max = a[i];
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}
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if (a[i] < min)
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{
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min = a[i];
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}
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}
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avg = sum / a.Length;
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return new int[] { sum, max, min, avg };
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}
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static bool Primenumber(int a)
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{
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for (int i = 2; i < a; i++)
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{
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if (a % i == 0)
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return false;
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}
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return true;
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}
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static bool Year(int a)
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{
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if (a%400 == 0 || (a%4 == 0 && a%100 != 0))
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{
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return true;
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}
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return false;
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}
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static void Main(string[] arg)
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{
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Console.WriteLine("比较大小：");
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Console.WriteLine(Compare(10, 20));
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Console.WriteLine("圆：");
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float[] circle = Circle(20);
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Console.WriteLine("perimeter:" + circle[0] + " " + "area:" + circle[1]);
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Console.WriteLine("综合：");
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int[] x = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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int[] result = ComplexCompare(x);
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Console.WriteLine("总和：" + result[0] + "最大" + result[1] + "最小" + result[2] + "平均" + result[3]);
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bool result2 = Primenumber(21);
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if (result2)
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{
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Console.WriteLine("是质数");
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}
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else
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{
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Console.WriteLine("不是质数");
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}
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Console.WriteLine("闰年：");
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Console.WriteLine(Year(2200));
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}
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}
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} |