Question 31 : Which of these operators can be used to concatenate two or more String objects?
1. +
2. +=
3. &
4. ||
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Question 32 : Which of the following statements are correct?
1. String is value type
2. String literals can contain any character literal including escape sequences
3. The equality operators are defined to compare values of string objects as well as references
4. All of the mentioned
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Question 33 : Correct way to find if contents of two strings are equal ?
1. if (s1 = s2)
2. if (s1 != s2)
3. if (strcmp (s1 ,s2))
4. if ( s1 is s2)
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Question 34 : Which of the following statement is correct about a string in C#.NET?
1. The System.Array class is used to represent a string
2. A string has a zero-based index
3. A number cannot be represented in the form of a string
4. A string is mutable because it can be modified once it has been created
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Question 35 : Choose the base class for string() method :
1. System.Array
2. System.char
3. System.String
4. None of the mentioned
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Question 36 : Which of the following string() method are used to compare two strings with each other?
1. CopyTo()
2. Copy()
3. Compare()
4. CompareTo()
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Question 37 : Choose selective differences between an array in c# and array in other programming languages.
1. Declaring array in C# the square bracket([]) comes after the type but not after identifier
2. It is necessary to declare size of an array with its type
3. No difference between declaration of array in c# as well as as in other programming languages
4. All of the mentioned
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Question 38 : Which is the correct way of defining and initializing an array of 3 integers?
1. int[] a={78, 54};
2. int[] a; a = new int[3]; a[1] = 78; a[2] = 9; a[3] = 54;
3. int[] a; a = new int{78, 9, 54};
4. int[] a; a = new int[3]{78, 9, 54};
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Question 39 : Which one of the following statements is correct?
1. The Array elements are guaranteed to be sorted.
2. The rank of an Array is the total number of elements it can contain.
3. The length of an Array is the number of dimensions in the Array.
4. The default value of numeric array elements is zero.
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