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Mar 26th, 2017
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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5. using System.Threading.Tasks;
  6.  
  7. namespace educational_practice_10
  8. {
  9. class Program
  10. {
  11. static public void ReadMatrix(char[,] matrix, int n, int m)
  12. {
  13. for (int i = 0; i < n; i++)
  14. {
  15. Console.WriteLine("Enter new group ");
  16. for (int j = 0; j < m; j++)
  17. {
  18. matrix[i, j] = Convert.ToChar(Console.ReadLine());
  19. }
  20. }
  21. }
  22. static public void ChangRegister(char[,] matrix, int n, int m)
  23. {
  24. for (int i = 0; i < n; i++)
  25. {
  26. for (int j = 0; j < m; j++)
  27. {
  28. if (Char.IsUpper(matrix[i, j]))
  29. {
  30. matrix[i, j] = Char.ToLower(matrix[i, j]);
  31. }
  32. else
  33. {
  34. matrix[i, j] = Char.ToUpper(matrix[i, j]);
  35. }
  36. }
  37. }
  38.  
  39. }
  40. }
  41. }
  42.  
  43. static public void Write(char[,] matrix, int n, int m)
  44. {
  45. for (int i = 0; i < n; i++)
  46. {
  47. for (int j = 0; j < m; j++)
  48. {
  49. Console.Write("{0} ", (matrix[i,j]).ToString());
  50. }
  51. Console.WriteLine();
  52. }
  53. }
  54.  
  55. static void Main(string[] args)
  56. {
  57. int n, m;
  58. Console.Write("Enter n, 2 =< n =< 10 ");
  59. n = Convert.ToInt32(Console.ReadLine());
  60. Console.Write("Enter m, 4 =< m =< 50 ");
  61. m = Convert.ToInt32(Console.ReadLine());
  62. char[,] matrix = new char[n, m];
  63. Program.ReadMatrix(matrix, n, m);
  64. Console.WriteLine("===============================");
  65. Program.Write(matrix, n, m);
  66. Console.WriteLine("===============================");
  67. Program.ChangRegister(matrix,n,m);
  68. Program.Write(matrix, n, m);
  69. }
  70. }
  71. }
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