1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6
7 namespace IntToStringAndStringToInt
8 {
9 class Program
10 {
11 /// <summary>
12 /// int 转 string ,string 转 int
13 /// </summary>
14 /// <param name="args"></param>
15 static void Main(string[] args)
16 {
17 int number = 98765432;
18 intToString(number);
19 string s = "556677889";
20 stringToInt(s);
21 Console.ReadKey();
22 }
23 public static void intToString(int num)
24 {
25 string s = string.Empty;
26 int a = 1;
27 List<int> slist = new List<int>();
28 while (true)
29 {
30 int mi = 1;
31 for (int i = 0; i < a; i++)
32 {
33 mi *= 10;
34 }
35 if (num * 10 / mi != 0)
36 {
37 if (a == 1)
38 {
39 slist.Add(num % mi);
40 }
41 else
42 {
43 slist.Add((num % mi - num % (mi/10)) * 10 / mi);
44 }
45 a++;
46 }
47 else
48 {
49 break;
50 }
51 }
52 for (int j = slist.Count - 1; j >= 0; j--)
53 {
54 s += slist[j];
55 }
56
57 Console.WriteLine(s);
58 }
59
60 public static void stringToInt(string s)
61 {
62 int sum = 0;
63 for (int i = 0; i < s.Length; i++)
64 {
65 int a = s[i] - '0';//s[i]中是数字的char，所以-'0'就是转成对应的数字，如 '1'-'0'就是得到1
66 sum = sum * 10 + a;
67
68 }
69 Console.WriteLine(sum);
70 }
71 }
72 }
