gs gs108 Indexers and Exception Handling - Properties and its Applications - Quiz No.1
gs gs108 CSharp Quiz
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Question 1: The correct way to implement a read only property add, in a math class is?
class math { int ad; public int add { get { return ad; } } } class math { public int add { get { return ad; } } } class math { int ad; public int add { get { return ad; } set { ad = value; } } }
None of the mentioned
Question 2: The correct way to implement a write only property add in a math class?
class math { public int add { set { add = value; } } } class math { int ad; public int add { set { ad = value; } } } class math { int ad; public int add { get { return ad; } set { ad = value; } } }
None of the mentioned
Question 3: Select the correct statement about properties of read and write in C#.NET?
A property can simultaneously be read or write only
A property cannot be either read only or write only
A write only property will only have get accessor
A read only property will only have get accessor
Question 4: What will be the output of the following C# code?
class number { private int num1; private int num2; public int anumber { get { return num1; } set { num1 = value; } } public int anumber1 { get { return num2; } set { num2 = value; } } } class Program { public static void Main(string[] args) { number p = new number(); p.anumber = 20; number k = new number(); k.anumber1 = 40; int m = p.anumber; int t = k.anumber1; int r = p.anumber + k.anumber1; System.Console.WriteLine("number1 = " +m); System.Console.WriteLine("number2 = " +t); System.Console.WriteLine("sum = " +r); System.Console.ReadLine(); } }
20
number1 = 30 number2 = 40 sum = 70number1 = 20 number2 = 40 sum = 60
Compile time error
Question 9: The correct way to implement the property for which property reports the error "invalid index" if user attempts to cross bounds of the array for a student class with 5 integer arrays.
class student { int []scores = new int[5] {23, 42, 54, 11, 65}; public int this[int index] { get { if (index < 5) return scores[index]; else { Console.WriteLine("invalid index"); return 0; } } set { if (index < 5) scores[index] = value; else Console.WriteLine("invalid index"); } } } class student { int []scores = new int[5] {23, 42, 54, 11, 65}; public int this[int index] { get { if (index < 5) return scores[index]; } } } class student { int []scores = new int[5]{23, 42, 54, 11, 65}; public int this[int index] { set { if (index < 5) return scores[index]; else { Console.WriteLine("invalid index"); return 0; } } } }
None of the mentioned
Question 10: What will be the output of the following C# code?
class student { int []scores = new int[3] {13, 32, 24}; public int this[int index] { get { if (index < 3) return scores[index]; else { Console.WriteLine("invalid index"); return 0; } } private set { if (index < 3) scores[index] = value; else Console.WriteLine("invalid index"); } } } class Program { public static void Main(string[] args) { student s = new student(); int[] scores1 = new int[3] {8, 19, 40}; for (int i = 0; i < 3; i++) { if (scores1[i] > s[i]) { Console.WriteLine(" scores1 had greater value :" + scores1[i]); } else { Console.WriteLine("scores had greater value :" + s[i]); } } Console.ReadLine(); } }
0
Compile time error
Run time error
scores had greater value : 13 scores had greater value : 32 scores1 had greater value : 40
