Please help me with these questions.

Question

nt[, ] arr = new int[4, 5];

int a = 0;

foreach (int i in arr)

{

Console.Write(i + " ");

}

Console.WriteLine("\n");

for (int i = 0; i < arr.GetLength(0); i++)

{

for (int j = 0; j < arr.GetLength(1); j++)

{

a += 5;

arr[i, j] = a;

}

}

for (int i = 0; i < arr.GetLength(0); i++)

{

for (int j = 0; j < arr.GetLength(1); j++)

{

Console.Write(arr[i, j] + " ");

}

}

1. What is the name of the array in this block of code? 
2. What is the data type of the array in this program? 
3. Draw and fill a table to represent the array in this program.
4. Why do you think the first row of output is all 0’s? 
5. What is the value of GetLength(0)?
6. What is the value of GetLenght(1)? 

Answer 1

1) The name of this array is arr

2) The data type of this array is int for integer

3)

The table looks like this. It has 4 rows and 5 columns..

0 1 2 3 4

0

1

2

3

4) because the array is not populated yet with real integer

values, the output is ZERO

5) GetLength(0) returns the length of the first dimension

of the array

6) GetLength(1) returns the length of the 2nd dimension

of the array