Basic Syntax and Data Types in C Sharp MCQs with Answers 2027

Q61

'Implicit Conversion' follows the order of conversion as per compatibility of data type as:

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Q62

What will be the output of the following C# code?

static void Main(string[] args)
{
    string s1 = "Delhi";
    string s2;
    s2 = s1.Insert (6, "Jaipur");
    Console.WriteLine(s2);
}

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Q63

Open question

What will be the output of the following C# code?

static void Main(string[] args)
{
    { 
        var dayCode = "MTWFS";
        var daysArray = new List<string>();
        var list = new Dictionary<string, string>
        { {"M", "Monday"}, {"T", "Tuesday"}, {"W", "Wednesday"},
          {"R", "Thursday"}, {"F", "Friday"}, {"S", "Saturday"},
          {"U", "Sunday"}
        };
       for (int i = 0,max = dayCode.Length; i < max; i++)
       {
           var tmp = dayCode[i].ToString();
           if (list.ContainsKey(tmp))
           {
               daysArray.Add(list[tmp]);
            }
       }
       Console.WriteLine(string.Join("\n ", daysArray)); 
 }

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Q64

Open question

Choose the correct type of variable scope for the following C# defined variables.

class ABC
{
    static int m;
    int n;
    void fun (int x , ref int y, out int z, int[] a)
    {
       int j = 10;
    }
}

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Q65

Open question

Which is the String method used to compare two strings with each other?

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Q66

Open question

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();
}

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Q67

Open question

Correct Declaration of Values to variables 'a' and 'b'?

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Q68

Open question

What is the Size of 'Char' datatype?

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Q69

Open question

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();
}

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Q70

Open question

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;
}

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Q71

Open question

Which of the following format specifiers is used to print hexadecimal values and return value of output as Octal equivalent in C#?

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Q72

Open question

How many Bytes are stored by 'Long' Data type in C# .net?

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Q73

Open question

Verbatim string literal is better used for?

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Q74

Open question

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();
}

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Q75

Open question

Types of 'Data Conversion' in C#?

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Q76

Open question

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();
}

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Q77

Open question

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();
}

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Q78

Open question

The following C# codes are?

1. Myclass class;
   Myclass class2 = null;

2. int i;
   int j = 0;

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Q79

Open question

Valid Size of float data type is?

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Q80

Open question

The Default value of Boolean Data Type is?

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Basic Syntax and Data Types in C Sharppractice.

Basic Syntax and Data Types in C Sharp
practice.