Question

1. In the following C code, Which variable if NOT of primitive data type?
   A. a
   B. b
   C. c
   D. d

int a = 10;
double b = 20.0;
float c = false;
char d[5] =  "Hello"; // here we define a string

2. In programming language C, the implementation of a string data type is limited dynamic length, which means the length of a string variable is fixed once it has been defined.
   A. True
   B. False

3. In C# programming language, the enum variables are NOT coerced to int. The following C# code is invalid.
   A. True
   B. False

public enum Season
{
    Spring,
    Summer,
    Autumn,
    Winter
}

public class EnumConversionExample
{
    public static void Main()
    {
        Season a = Season.Autumn;
        int b = a + 1;
    }
}

4. In the following C++ code, the new operator dynamically creates an array with a fixed length on the heap, this is called a ___ array.
   A. static
   B. fixed stack-dynamic
   C. fixed heap-dynamic
   D. heap-dynamic arraybr>

//filename demo.cpp

int* p = new int[100];

5. Arrays can only contain elements of the same data type, while records can contain elements of different data types.
   A. True
   B. False

6. In some programming languages, the two-dimensional arrays are implemented column by column (column-major order), What will be the memory block of the two-dimensional array-like?
   A. A
   B. B

7. In the following python code, you can use an index 0 to access the name in an associative array.
   A. True
   B. False

// filename: demo.py

student1 = {"name": "John doe", "gender": "M", "age": 20}

student1[0]

8. What problem(s) the following code will cause?
   A. dangling pointers
   B. lost dynamic-heap variable
   C. both
   D. neither

// filename: demo.c

int num1 = 10;
int num2 = 20;
int* p1 = &num1; // & is called address of operator, which returns the address of a variable
int* p2 = &num2;
p2 = p1;

9. The type checking must be static if the type binding must be static.
   A. True
   B. False

10. Two data types have the structure type equivalence if They are built in exactly the same way using the same type constructors from the same simple types, even the variable names and the order of the variables must be the same. The two data types Rec1 and Rec2 defined in the following code are structurally equivalent.
    A. True
    B. False

struct Rec1{
  char x;
  int y;
  char z[10];
};

struct Rec1{
  int y;
  char x;
  char z[10];
};

Answer 1

char d[5]="Hello"

cannot define as primitive data type if use String there

because:-

String is non primitive data type

False

Because:

Dynamic Length Strings: Allows strings various length with no maximum. Requires the overhead of dynamic storage allocation and deallocation but provides flexibility. Ex: Perl and JavaScript

TRUE

code is invalid

because:-

we cannot explicitly cast season

C. fixed heap-dynamic

because :-

dynamic array store in heap area

TRUE

because:-

array can contain same data type where are records contain different data types

In some programming languages, the two-dimensional arrays are implemented column by column (column-major order), What will be the memory block of the two-dimensional array-like?

Answer:-
A. A

False:-

We cannot access using Student[0]

lost dynamic-heap variable

because p1 value assigning to p2

The type checking must be static if the type binding must be static.
Answer:-
B. False

because:- the tye checking must be static if the binding must be "dynamic"

A. True

because they are equal