Accessing Arrays Value

After storing values into the array, you need to access the values from array and require some operation on value. As storing value in array is very simple, the accessing value from array is also so simple. You can access array’s value by its index position. Each index position in array refers to a memory address in which your values are saved.

Consider the following example:

 int[] arr=new int[6];

If you have to access value from above array then you can access value by following ways:

int num1, num2;
 num1 = arr[1] * arr[3];

It is same as: 

num1 = 23 * 9; Becaue, arr[1] refers to the value 23 and arr[3] refers to the value 9.

If you are required to access entire value of an array one after another, then you can use loop constructs to iterate through array.   

Example:   

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using System;

namespace accessing_array_value
{
  class Program
   {
     static void Main(string[] args)
      {
        int[] age=new int[6];
        string[] name = new string[6];
        int i,j=0;
        string find;
           
        // Storing users name and age in two different array. 
        for (i = 0; i < 6; i++)
         {
           Console.Write("\n\nEnter your name:\t");
           name[i] = Console.ReadLine();
           Console.Write("Enter your age:\t\t");
           age[i] = Convert.ToInt32(Console.ReadLine());
         }

        //Accepting name and find their correspondence age in array.

        Console.Write("\n\nEnter your name to find age:\t");
        find = Console.ReadLine();

        for (i = 0; i < 6; i++)
         {
           if (name[i] == find)
            {
              Console.WriteLine("\n\nName\t:{0}", name[i]);
              Console.WriteLine("Age\t:{0}", age[i]);
              j++;
            }
         }
           if (j == 0)
            {
              Console.WriteLine("Not Found!!!");
            }
        Console.ReadLine();
      }
   }
}

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Output:

Enter your name:      Aav
Enter your age:        18

Enter your name:      mukesh
Enter your age:       18

Enter your name:      Rohit
Enter your age:        17

Enter your name:     Tarak
Enter your age:        19

Enter your name:      Aditya
Enter your age:        19

Enter your name:      Manish
Enter your age:         23


Enter your name to find age:    Aav

Name   :Aav
Age      :18

Explanation:

In the preceding program, we create two different types of array. One is integer type array which holds integer value and another one is string type array that holds string value.

int[] age=new int[6];
 string[] name = new string[6];

Then, we stored name and age in both array and then accept a string value from user to find their corresponding age. We store user input in a find variable. Then, using for loop, we check each index position of name array and compare them with find variable. If they match, the program shows up their name along with age, if they didn’t find any value then shows Not Found!!! message to the user.

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for (i = 0; i < 6; i++)
 {
   if (name[i] == find)
    {
      Console.WriteLine("\n\nName\t:{0}", name[i]);
      Console.WriteLine("Age\t:{0}", age[i]);
      j++;
    }
 }

 

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