C# Programming - Strings

Exercise :: Strings - General Questions

  • Strings - General Questions
11. 

Which of the following statements about a String is correct?

A. A String is created on the stack.
B. Whether a String is created on the stack or the heap depends on the length of the String.
C. A String is a primitive.
D. A String can be created by using the statement String s1 = new String;
E. A String is created on the heap.

Answer: Option E

Explanation:

No answer description available for this question. Let us discuss.

12. 

Which of the following statement is correct about a String in C#.NET?

A. A String is mutable because it can be modified once it has been created.
B. Methods of the String class can be used to modify the string.
C. A number CANNOT be represented in the form of a String.
D. A String has a zero-based index.
E. The System.Array class is used to represent a string.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

13. 

Which of the following will be the correct output for the C#.NET code snippet given below?

String s1 = "Five Star";
String s2 = "FIVE STAR";
int c;
c = s1.CompareTo(s2);
Console.WriteLine(c);

A. 0
B. 1
C. 2
D. -1
E. -2

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

14. 

If s1 and s2 are references to two strings then which of the following are the correct ways to find whether the contents of the two strings are equal?

  1. if(s1 = s2)
  2. if(s1 == s2)
  3. int c;
    c = s1.CompareTo(s2);
  4. if( strcmp(s1, s2) )
  5. if (s1 is s2)

A. 1, 2
B. 2, 3
C. 4, 5
D. 3, 5

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

15. 

Which of the following statements are correct about the String Class in C#.NET?

  1. Two strings can be concatenated by using an expression of the form s3 = s1 + s2;
  2. String is a primitive in C#.NET.
  3. A string built using StringBuilder Class is Mutable.
  4. A string built using String Class is Immutable.
  5. Two strings can be concatenated by using an expression of the form s3 = s1&s2;

A. 1, 2, 5
B. 2, 4
C. 1, 3, 4
D. 3, 5

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.