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Basic Syntax And Data Types In C Sharp MCQs

Practice Basic Syntax And Data Types In C Sharp MCQs for competitive exams.

Basic Syntax And Data Types In C Sharp MCQs

Practice questions from this topic.

What will be the output of the following C# string? (Enter a String : BOMBAY). static void Main(string[] args) { string Str, Revstr = " "; int Length; Console.Write("Enter A String : "); Str = Console.ReadLine(); Length = Str.Length - 1; while (Length >= 0) { Revstr = Revstr + Str[Length]; Length --; } Console.WriteLine("Reverse String Is {0}", Revstr); Console.ReadLine(); }

  1. A. BOMBA
  2. B. YABMOB
  3. C. BOMAYB
  4. D. YABMO
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What will be the output of the following C# code? static void Main(string[] args) { int a = 5; int b = 10; int c; Console.WriteLine(c = a-- - ++b); Console.WriteLine(b); Console.ReadLine(); }

  1. A. -7, 10
  2. B. -5, 11
  3. C. -6, 11
  4. D. 15, 11
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Types of 'Data Conversion' in C#?

  1. A. Implicit Conversion
  2. B. Explicit Conversion
  3. C. Implicit Conversion and Explicit Conversion
  4. D. None of the mentioned
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What will be the output of the following C# code? static void Main(string[] args) { float sum; int i; sum = 0.0F; for (i = 1; i <= 10; i++) { sum = sum + 1 /(float)i; } Console.WriteLine("sum =" +sum); Console.ReadLine(); }

  1. A. 2.000
  2. B. 2.910
  3. C. 2.928
  4. D. 3.000
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Verbatim string literal is better used for?

  1. A. Convenience and better readability of strings when string text consist of backlash characters
  2. B. Used to initialize multi-line strings
  3. C. To embed a quotation mark by using double quotation marks inside a verbatim string
  4. D. All of the mentioned
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How many Bytes are stored by 'Long' Data type in C# .net?

  1. A. 8
  2. B. 4
  3. C. 2
  4. D. 1
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Which of the following format specifiers is used to print hexadecimal values and return value of output as Octal equivalent in C#?

  1. A. %hx for small case letters and %HX for capital letters
  2. B. %x for small case letters and %X for capital letters
  3. C. No ease of doing it. C# don't provides specifier like %x or %O to be used with ReadLine() OR WriteLine(). We have to write our own function
  4. D. %Ox for small case letters and %OX for capital letters
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Why does a float variable stop incrementing at number '16777216' in the following C# code? float a = 0 ; while (true) { a++; if (a > 16777216) break; }

  1. A. Sign and Exponent for '16777217' is same as for '16777216'
  2. B. Mantissa is different for '16777216' and '16777217'
  3. C. Sign and Exponent for '16777217' is different from '16777216'
  4. D. None of the mentioned
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What will be the output of the following C# code? static void Main(string[] args) { int x = 1; float y = 2. 4f; short z = 1; Console. WriteLine((float) x + y * z - (x + = (short) y) ); Console. ReadLine(); }

  1. A. 0.4000004
  2. B. 0.4000023
  3. C. 0.0400021
  4. D. 0.4000001
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What is the Size of 'Char' datatype?

  1. A. 8 bit
  2. B. 12 bit
  3. C. 16 bit
  4. D. 20 bit
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Correct Declaration of Values to variables 'a' and 'b'?

  1. A. int a = 32, b = 40.6
  2. B. int a = 42; b = 40
  3. C. int a = 32; int b = 40
  4. D. int a = b = 42
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What will be the output of the following C# code? static void Main(string[] args) { int i ; for (i = 0; i < 5; i++) { int j = 0; j += i; Console. WriteLine(j); } Console. WriteLine( i * j); Console. ReadLine(); }

  1. A. 0, 1, 6, 18, 40
  2. B. 0, 1, 5, 20, 30
  3. C. Compile time error
  4. D. 0, 1, 2, 3, 4, 5
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