Datatypes Questions

• Which of the following is the correct default value of a Boolean type?
• Which of the following are value types? Integer Array Single String Long
• Which of the following are the correct way to initialise the variables i and j to a value 10 each? int i = 10; int j = 10; int i, j; i = 10 : j = 10; int i = 10, j = 10; int i, j = 10; int i = j = 10;
• What will be the output of the following code snippet when it is executed? int x = 1; float y = 1.1f; short z = 1; Console.WriteLine((float) x + y * z - (x += (short) y));
• Which of the following is the correct ways to set a value 3.14 in a variable pi such that it cannot be modified?
• Which of the following statements is correct about the C#.NET code snippet given below? short s1 = 20; short s2 = 400; int a; a = s1 * s2;
• Which of the following is NOT an Integer?
• Which of the following statements are correct about data types? If the integer literal exceeds the range of byte, a compilation error will occur. We cannot implicitly convert non-literal numeric types of larger storage size to byte. Byte cannot be implicitly converted to float. A char can be implicitly converted to only int data type. We can cast the integral character codes.
• What is the size of a Decimal?
• Which of the following statements is correct?
• Which of the following statements are correct? We can assign values of any type to variables of type object. When a variable of a value type is converted to object, it is said to be unboxed. When a variable of type object is converted to a value type, it is said to be boxed. Boolean variable cannot have a value of null. When a value type is boxed, an entirely new object must be allocated and constructed.
• Which of the following is an 8-byte Integer?
• Which of the following statements are correct about data types? Each value type has an implicit default constructor that initializes the default value of that type. It is possible for a value type to contain the null value. All value types are derived implicitly from System.ValueType class. It is not essential that local variables in C# must be initialized before being used. Variables of reference types referred to as objects and store references to the actual data.
• Which of the following does not store a sign?
• Which of the following statement correctly assigns a value 33 to a variable c? byte a = 11, b = 22, c;
• Which of the following is the correct size of a Decimal datatype?
• Which of the following statements are correct about datatypes in C#.NET? Every datatype is either a value type or a reference type. Value types are always created on the heap. Reference types are always created on the stack. Mapping of every value type to a type in Common Type System facilitates Interoperability in C#.NET. Every reference type gets mapped to a type in Common Type System.