gs gs108 Arrays and Strings - Array and Initialization - Quiz No.1
gs gs108 CSharp Quiz
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Question 1: What will be the output of the following C# code?
static void Main(string[] args) { int i, j; int[, ] arr = new int[ 3, 3]; for (i = 0; i < 3; ++i) { for (j = 0; j < 3; ++j) { arr[i, j] = i * 2 + i * 2; Console.WriteLine(arr[i, j]); } Console.ReadLine(); } }
0, 0, 0 4, 4, 4 8, 8, 8
4, 4, 4 8, 8, 8 12, 12, 12
8, 8, 8 12, 12, 12 16, 16, 16
0, 0, 0 1, 1, 1 2, 2, 2
Question 3: Complete the following C# code with "foreach condition".
int[][]a = new int[2][]; a[0] = new int[3]{3, 4, 2}; a[1] = new int[2]{8, 5}; foreach( int[]i in a) { /* add for loop */ console.write( j+ " "); console.writeline(); }
foreach (int j = 1;(j(<)(a(0).GetUpperBound)); (j++));
foreach (int j = 1;(j(<)(a.GetUpperBound(0))); (j++));
foreach (int j in a.Length);
foreach (int j in i);
Question 5: Which statement is correct about following c#.NET code?
int[] a= {11, 3, 5, 9, 6};
'a' is a reference to the array created on stack
'a' is a reference to an object created on stack
'a' is a reference to an object of a class that compiler drives from 'System.Array' class
None of the mentioned
Question 6: What is the advantage of using 2D jagged array over 2D rectangular array?
Easy initialization of elements
Allows unlimited elements as well as rows which had '0' or are empty in nature
All of the mentioned
None of the mentioned
Question 7: Which statement is correct about following C# code?
int[, ]a={{5, 4, 3},{9, 2, 6}};
'a' represents 1-D array of 5 integers
a.GetUpperBound(0) gives 9
'a' represents rectangular array of 2 columns and 3 arrays
a.GetUpperBound(0) gives 2
Question 8: What will be the output of the following C# code?
static void Main(string[] args) { Program p = new Program(); p.display(2, 3, 8); int []a = { 2, 56, 78, 66 }; Console.WriteLine("example of array"); Console.WriteLine("elements added are"); p.display(a); Console.ReadLine(); } public void display(params int[] b) { foreach (int i in b) { Console.WriteLine("ARRAY IS HAVING:{0}", i); } }
Compile time error
Run time error
Code runs successfully but prints nothing
Code runs successfully and prints given on console
Question 9: Which is the correct way of defining and initializing an array of 3 integers?
int[] a={78, 54};
int[] a; a = new int[3]; a[1] = 78; a[2] = 9; a[3] = 54; int[] a; a = new int{78, 9, 54}; int[] a; a = new int[3]{78, 9, 54};
Question 10: Choose selective differences between an array in c# and array in other programming languages.
Declaring array in C# the square bracket([]) comes after the type but not after identifier
It is necessary to declare size of an array with its type
No difference between declaration of array in c# as well as in other programming languages
All of the mentioned
