C# Programming - Classes and Objects - Discussion
Discussion Forum : Classes and Objects - General Questions (Q.No. 1)
1.
Which of the following statements is correct about the C#.NET code snippet given below?
class Student s1, s2; // Here 'Student' is a user-defined class.
s1 = new Student();
s2 = new Student();Discussion:
17 comments Page 2 of 2.
Manish Kumar said:
10 years ago
@Andrew Cope.
I agree its better to say "The characteristics of the two objects will be the same".
I agree its better to say "The characteristics of the two objects will be the same".
Alek said:
9 years ago
This is wrong, for example if Student is defined as:
class student
{
static int _last_id;
static Student () { _last_id = 0; }
int id;
student ()
{
id = _last_id;
_last_id++;
}
}
Then obviously their contents won't be the same.
The correct answer is : 'Program won't compile'.
Because keyword class is illegal in a statement.
class student
{
static int _last_id;
static Student () { _last_id = 0; }
int id;
student ()
{
id = _last_id;
_last_id++;
}
}
Then obviously their contents won't be the same.
The correct answer is : 'Program won't compile'.
Because keyword class is illegal in a statement.
John said:
9 years ago
@Alek.
Yes same thoughts here, the code given won't compile, because the class keyword is used before the declaration of the 2 student objects s1, s2.
Yes same thoughts here, the code given won't compile, because the class keyword is used before the declaration of the 2 student objects s1, s2.
Sidhu said:
9 years ago
BaseClass s1,s2;// = new Drived();
s1 = new BaseClass();
s2 = new BaseClass();
if (s1 == s2)
{
Console.WriteLine("contents of both objects are same");
}
s1 = new BaseClass();
s2 = new BaseClass();
if (s1 == s2)
{
Console.WriteLine("contents of both objects are same");
}
GardenExit said:
8 years ago
@Indrapal.
s1 and s2 have different hashcodes.
So,
s1 == s2
It can never be true.
s1 and s2 have different hashcodes.
So,
s1 == s2
It can never be true.
Dickenz said:
8 years ago
A: S1 and S2 are merely reference variables containing the addresses of the 2 objects created therefor contents are different.
B: reference type variables are created on the heap not stack.
D: objects created on the heap are allocated memory at run time such that they are not necessarily created in adjacent memory.
E: deleting from memory is done by garbage collection or explicitly defining a despose method using methods such as GC.SuppressFinalize.
B: reference type variables are created on the heap not stack.
D: objects created on the heap are allocated memory at run time such that they are not necessarily created in adjacent memory.
E: deleting from memory is done by garbage collection or explicitly defining a despose method using methods such as GC.SuppressFinalize.
Monk said:
7 years ago
class Student s1, s2;
Can anyone explain what is s1,s2 here, whether is it class or variable?
Can anyone explain what is s1,s2 here, whether is it class or variable?
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