C# Programming Mock Test 1

1. What will be the correct set of C# code to display the value of given variable 'c' as '25.302'.

2. The correct way of incrementing the operators are:

3. Choose effective differences between 'Boxing' and 'Unboxing'.

4. A float occupies 4 bytes. If the hexadecimal equivalent of these 4 bytes are A, B, C and D, then when this float is stored in memory in which of the following order do these bytes gets stored?

5. Check the following C# code whether the given relation operator works according to the if condition or not.

 static void Main(string[] args)
 {
     int a = 10;
     int b = 5;
     int c = 12; 
     int e = 8;
     int d;
     d = Convert.ToInt32((a * (c - b) / e + (b + c)) <= (e * (c + a) / (b + c) + a));
     Console.WriteLine(d);
     if (d == 1)
     {
         Console.WriteLine("C# is great language!");
         Console.WriteLine((a * (c - b) / e + (b + c)));
     }
     else
     {
         Console.WriteLine("harsh is not great language!");
         Console.WriteLine((e * (c + a) / (b + c) + a));
     }
 }

6. Valid Size of float data type is?

7. Correct statement about strings are?

8. The Default value of Boolean Data Type is?

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

10. Select appropriate difference between decimal, float and double data type in C#?

i) Float and Double are floating binary point types while decimal is a floating decimal point type.
ii) Precision difference for float is '7' digit for double is '15' to '16' digit and for decimal is '28' to '29' digits.
iii) Some values which cannot be exactly represented hence for those values float and double are more appropriate.