Strings problems
- 1. 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);
Options- A. 0
- B. 1
- C. 2
- D. -1
- E. -2 Discuss
Correct Answer: -1
- 2. Which of the following statements are true about the C#.NET code snippet given below?
String s1, s2; s1 = "Hi"; s2 = "Hi";
- String objects cannot be created without using new.
- Only one object will get created.
- s1 and s2 both will refer to the same object.
- Two objects will get created, one pointed to by s1 and another pointed to by s2.
- s1 and s2 are references to the same object.
Options- A. 1, 2, 4
- B. 2, 3, 5
- C. 3, 4
- D. 2, 5 Discuss
Correct Answer: 2, 3, 5
- 3. Which of the following will be the correct output for the C#.NET code snippet given below?
String s1 = "Nagpur"; String s2; s2 = s1.Insert(6, "Mumbai"); Console.WriteLine(s2);
Options- A. NagpuMumbair
- B. Nagpur Mumbai
- C. Mumbai
- D. Nagpur
- E. NagpurMumbai Discuss
Correct Answer: NagpurMumbai
- 4. Which of the following is correct way to convert a String to an int?
String s = "123"; int i; i = (int)s;
String s = "123"; int i; i = int.Parse(s);
String s = "123"; int i; i = Int32.Parse(s);
String s = "123"; int i; i = Convert.ToInt32(s);
String s = "123"; int i; i = CInt(s);
Options- A. 1, 3, 5
- B. 2, 4
- C. 3, 5
- D. 2, 3, 4 Discuss
Correct Answer: 2, 3, 4
- 5. If s1 and s2 are references to two strings, then which of the following is the correct way to compare the two references?
Options- A. s1 is s2
- B. s1 = s2
- C. s1 == s2
- D. strcmp(s1, s2)
- E. s1.Equals(s2) Discuss
Correct Answer: s1.Equals(s2)
- 6. The string built using the String class are immutable (unchangeable), whereas, the ones built- using the StringBuilder class are mutable.
Options- A. True
- B. False Discuss
Correct Answer: True
- 7. Which of the following statements about a String is correct?
Options- 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. Discuss
Correct Answer: A String is created on the heap.
- 8. Which of the following statements are correct about the String Class in C#.NET?
- Two strings can be concatenated by using an expression of the form s3 = s1 + s2;
- String is a primitive in C#.NET.
- A string built using StringBuilder Class is Mutable.
- A string built using String Class is Immutable.
- Two strings can be concatenated by using an expression of the form s3 = s1&s2;
Options- A. 1, 2, 5
- B. 2, 4
- C. 1, 3, 4
- D. 3, 5 Discuss
Correct Answer: 1, 3, 4
- 9. 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?
if(s1 = s2)
if(s1 == s2)
int c; c = s1.CompareTo(s2);
if( strcmp(s1, s2) )
if (s1 is s2)
Options- A. 1, 2
- B. 2, 3
- C. 4, 5
- D. 3, 5 Discuss
Correct Answer: 2, 3
- 10. Which of the following statements will correctly copy the contents of one string into another?
Options- A.
String s1 = "String"; String s2; s2 = s1; - B.
String s1 = "String" ; String s2; s2 = String.Concat(s1, s2); - C.
String s1 = "String"; String s2; s2 = String.Copy(s1); - D.
String s1 = "String"; String s2; s2 = s1.Replace(); - E.
String s1 = "String"; String s2; s2 = s2.StringCopy(s1);
Discuss
Correct Answer:
String s1 = "String";
String s2;
s2 = String.Copy(s1);More in C# Programming:
Programming
Copyright ©CuriousTab. All rights reserved.