函数练习
1、兔子问题的函数做法
主要代码:
static void Main(string[] args) { Program method = new Program(); Console.Write("请输入月数:"); int mouth = int.Parse(Console.ReadLine()); Console.WriteLine(method.rabbit(mouth)); Console.ReadLine(); } public int rabbit(int mouth) { int y = 1; int x = 0; int c = 0; int s = 1; if (mouth >= 1 && mouth <= 12) { for (int i = 1; i <= mouth; i++) { if (i == 1) { y = 1; x = 0; c = 0; } else { c += x; x = y; y = c; } s = c + x + y; } } return s; }
结果:
2、卖养,每过一个村庄卖掉总数的二分之一零一只,过了七个村庄后还有两只,问最初有多少只羊。
主要代码:
static void Main(string[] args) { Program method = new Program(); Console.WriteLine(method.goat(2)); Console.ReadLine(); } public int goat(int num) { for (int i = 8; i > 1; i--) num = (num + 1) * 2; return num; }
结果:
3、篮球从20米落下,反弹原来的3/4,输入弹起次数,算出总长度(有返回值,有参数)
主要代码:
static void Main(string[] args) { Program function = new Program(); Console.Write("请输入弹起次数:"); int n = int.Parse(Console.ReadLine()); double h = 20; Console.WriteLine(function.hight(h, n)); Console.ReadLine(); } public double hight(double h, int c) { double sum = 0; for (double i = 0; i < c; i++) { sum += 2 * h; h *= 0.75; } sum -= 20; return sum; }
结果:
4、随机出现32以内的6个红球,随机出现16以内的1个蓝球,组成彩票号码(无参数,有返回值)
主要代码:
static void Main(string[] args) { Program function = new Program(); int[] lottery = function.lottery(); foreach (int a in lottery) Console.Write(a + "\t"); Console.ReadLine(); } public int[] lottery() { Random red = new Random(); int[] array = new int[7]; for (int i = 0; i < 6; i++) { int Red = red.Next(1, 33); array[i] = Red; for (int j = 0; j < i; j++) { if (array[j] == Red) i--; } } Random blue = new Random(); int Blue = blue.Next(1, 17); array[6] = Blue; return array; }
结果:
5、打印等腰三角形
主要代码:
static void Main(string[] args) { Program function = new Program(); Console.Write("请输入行数:"); int h = int.Parse(Console.ReadLine()); function.triangle(h); Console.ReadLine(); } public void triangle(int h) { for (int i = 0; i <= h; i++) { for (int j = h - 1; j >= i; j--) Console.Write(" "); for (int k = 0; k < i; k++) Console.Write("*"); for (int n = 0; n < i - 1; n++) Console.Write("*"); Console.WriteLine(); } }
结果: