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  1. using System;
  2. using System.Threading;
  3.  
  4. namespace ConsoleApplication7
  5. {
  6.     internal class Program
  7.     {
  8.         private static void Main(string[] args)
  9.         {
  10.             int m = 4;
  11.             int n = 6;
  12.  
  13.             Random rnd=new Random();
  14.  
  15.             var matrix = new int[m, n];
  16.  
  17.             for (int i = 0; i < matrix.GetLength(0); i++)
  18.             {
  19.                 for (int j = 0; j < matrix.GetLength(1); j++)
  20.                 {
  21.                     matrix[i, j] = rnd.Next(1, 9);
  22.                     Console.Write($"{matrix[i,j]} ");
  23.                 }
  24.  
  25.                 Console.WriteLine();
  26.             }
  27.             int sum = 0;
  28.             for (int i = 1; i < matrix.GetLength(1); i+=2)
  29.             {
  30.                 for (int j = 0; j < matrix.GetLength(0); j++)
  31.                 {
  32.                     sum += matrix[j, i];
  33.                 }
  34.                 Console.WriteLine("Сумма {0} //{1}столбец",sum,i+1);
  35.                 sum = 0;
  36.             }
  37.  
  38.         }
  39.  
  40.     }
  41. }
Success #stdin #stdout 0.04s 23952KB
comments (?)
stdin 
Standard input is empty
stdout 
7 2 8 8 2 6 
1 4 5 6 7 5 
6 8 1 6 1 7 
7 7 3 7 4 4 
Сумма 21 //2столбец
Сумма 27 //4столбец
Сумма 22 //6столбец
https://ideone.com/TGSJJU
language:
C# (gmcs 5.20.1)
created:
8 years ago
visibility:
public

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