String MCQ with Answers PDF Download – Test 20

MCQ 96: Operator used for concatenation of two or more strings is:

1. +
2. +='
3. &
4. ||

MCQ 97: Functions in C# are a means of providing blocks of code that can:

1. be executed at any point in the an application
2. decrease the efficiency of the compiler
3. not be resued
4. have some parameters

MCQ 98: Choose the correct output for the given code
static void Main() { int[] nums = { 1, 2, 3, 4, 5 }; Console.Write("Original order: "); foreach(int i in nums) Console.Write(i + " "); Array.Reverse(nums); Console.Write("Reversed order: "); foreach(int i in nums) Console.Write(i + " "); Console.WriteLine(); } :

1. run time error
2. 5,4,3,2,1
3. compile time error
4. 1,2,3,4,5

MCQ 99: Choose the correct statement:

1. Information is never lost during narrowing conversions.
2. The CInteger() function can be used to convert a Single to an Integer.
3. Widening conversions take place automatically.
4. Assigning an Integer to an Object type is known as Unboxing.

MCQ 100: The complex data types used in C# are:

1. Enum
2. Struct
3. Arrays
4. All of the above