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C# Strings Aptitude Questions and Answers | Set 1

C# Strings Aptitude Questions | Set 1: This section contains aptitude questions and answers on C# Strings.
Submitted by Nidhi, on April 05, 2020

1) There are following statements are given below, which of them are correct about "String" in C#.NET?

In C#.NET, we used the character array to represent a string just like C language.
In C#.NET, String is mutable.
A String is a predefined class in C#, which is used to create strings.
We need to use the System.Array class to create a string.

Options:

Answer & Explanation

2) In C#, String is a value type?

Answer & Explanation

3) If we have two references for strings like STR1 and STR2. And we want to compare them, and then what is the correct way?

Answer & Explanation

4) What is the correct output of given code snippets?

static void Main(string[] args)
{
	String s1 = "ABC";
	string s2 = "ABC";

	if(s1==s2)
		Console.WriteLine("S1 and S2 are equal");
	else
		Console.WriteLine("S1 and S2 are not equal");
}

Answer & Explanation

5) What is the correct output of given code snippets?

static void Main(string[] args)
{
	String STR1 = "ABC";
	String STR2;
	String STR3;

	STR2 = STR1;
	STR3 = String.Copy(STR1);
	Console.WriteLine(STR1 + " " + STR2 + " "+STR3);
}