1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6
7 namespace OUT函数
8 {
9 class Program
10 {
11 //public void outzhi(double a, double b, double c, out double j1, out double j2)
12 public void outzhi(double a, double b, double c, out string j1, out string j2)
13 {
14 double de = b * b - 4 * a * c;
15 if (de < 0)
16 {
17 Console.WriteLine("函数没有实根");
18 j1 = j2 = "";
19
20 }
21 else
22 {
23 double x1 = (-b + Math.Sqrt(de)) / (2 * a);
24 double x2 = (-b - Math.Sqrt(de)) / (2 * a);
25 if (de == 0)
26 {
27 Console.WriteLine("方程有两个相同的实根");
28 j1 = j2 = x1.ToString();
29 }
30 else
31 {
32 Console.WriteLine("方程有两个不同的实根");
33 //Console.Write("x1=" + x1); Console.Write(" x2=" + x2);
34 j1 = x1.ToString();
35 j2 = x2.ToString();
36 }
37 }
38
39 }
40
41
42 static void Main(string[] args)
43 {
44 Program hanshu = new Program();
45 Console.Write("请输入a=");
46 double a = double.Parse(Console.ReadLine());
47 Console.Write("请输入b=");
48 double b = double.Parse(Console.ReadLine());
49 Console.Write("请输入c=");
50 double c = double.Parse(Console.ReadLine());
51 //double j1 = 0;
52 //double j2 = 0;
53 string j1 = "";
54 string j2 = "";
55 hanshu.outzhi(a, b, c, out j1, out j2);
56 Console.WriteLine("第一个根x1=" + j1);
57 Console.Write("第二个根x2=" + j2);
58 Console.ReadLine();
59
60 }
61 }
62 }
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6
7 namespace _0630下午
8 {
9 class Program
10 {
11 public void hou()
12 {
13 int sum = 0;
14 for (int i = 10; i > 0; i--)
15 {
16 if (i == 10)
17 {
18 sum = 1;
19 }
20 else
21 {
22 sum = (sum + 1) * 2;
23 }
24 }
25 Console.Write(sum);
26 }
27
28 public int jiafen(int a)
29 {
30 a+= 10;
31 return a;
32 }
33
34 public void jiafen2(int[] a)
35 {
36 int l= a.Length;
37 for (int i = 0; i < l; i++)
38 {
39 a[i] += 10;
40 }
41 }
42
43 public int [] jiafen4(int[] a)
44 {
45 int l = a.Length;
46 for (int i = 0; i < l; i++)
47 {
48 a[i] += 10;
49 }
50 return a;
51 }
52
53 public void jiafen3(int[] a, out int[] b)
54 {
55 int l = a.Length;
56 for (int i = 0; i < l; i++)
57 {
58 a [i] = a[i] + 10;
59 }
60 b = a;
61 }
62
63 static void Main(string[] args)
64 {
65 //out 传值 形式参数：只给值，不给变量名（传值） 实际参数：将变量名传给函数（传址）
66 //out是实参
67
68 Program hanshu=new Program();
69 //猴子
70 //hanshu.hou();
71 //Console.ReadLine();
72
73 //输入班级人数，根据人数输入每个人的成绩
74 //本班都是少数民族学生，每个人+10分
75 //写一个专门+10分的函数，参数是这个分数的数组
76 Console.WriteLine("请输入班级的人数");
77 int renshu = int.Parse(Console.ReadLine());
78 int[] fen = new int[renshu];
79 for (int i = 0; i < renshu ;i++ )
80 {
81 Console.WriteLine("请输入第{0}名同学的成绩",(i+1));
82 fen[i] = int.Parse(Console.ReadLine());
83 }
84 //for(int i=0;i <renshu ;i++)
85 //{
86 // fen[i ]= hanshu.jiafen(fen[i]);
87 //}
88
89 //hanshu.jiafen2(fen );
90 //hanshu.jiafen3(fen,out chengji);
91
92 int []chengji=new int [renshu ];
93 hanshu.jiafen3(fen,out chengji );
94 foreach(int aa in chengji )
95 {
96 Console.WriteLine(aa );
97 }
98 foreach (int aa in fen )
99 {
100 Console.WriteLine(aa);
101 }
102 Console.ReadLine();
103
104
105
106 }
107 }
108 }
