Q.1.
Which of these methods of class String is used to extract a substring from a String object?
Q.2.
What will be the output of the following C# code snippet? class Program{ static void Main(string[] args) { String s1 = "one"; String s2 = string.Concat(s1 + " " + "two"); Console.WriteLine(s2); Console.ReadLine(); }}
Q.3.
Which of these methods of class String is used to remove leading and trailing whitespaces?
Q.4.
What will be the output of the following C# code snippet? class Program{ static void Main(string[] args) { String c = " Hello World "; String s = c.Trim(); Console.WriteLine("""+s+"""); Console.ReadLine(); }}
Q.5.
What will be the output of the following C# code snippet? class Program { static void Main(string[] args) { String s1 = "CSHARP"; String s2 = s1.Replace('H','L'); Console.WriteLine(s2); Console.ReadLine(); } }
Q.6.
What will be the output of the following C# code snippet? class Program { static void Main(string[] args) { String s1 = "Hello World"; String s2 = s1.Substring(4); Console.WriteLine(s2); Console.ReadLine(); } }
Q.7.
What will be the output of the following C# code snippet? class Program { static void Main(string[] args) { String s = "Hello World"; int i = s.IndexOf('o'); int j = s.LastIndexOf('l'); Console.WriteLine(i + " " + j); Console.ReadLine(); } }
Q.8.
What will be the output of the following C# code snippet? class Program{ static void Main(string[] args) { String c = "i love Csharp"; bool a; a = c.StartsWith("I"); Console.WriteLine(a); Console.ReadLine(); }}
Q.9.
What will be the output of the following C# code snippet? class Program{ static void Main(string[] args) { String []chars = {"z", "x", "y", "z", "y"}; for (int i =i < chars.Length; ++i) for (int j = i +j < chars.Length; ++j) if(chars[i].CompareTo(chars[j]) == Console.WriteLine(chars[j]); Console.ReadLine(); }}
Q.10.
What will be the output of the following C# code snippet? static void main(String args[]) { char chars[] = {'a', 'b', 'c'}; String s = new String(chars); Console.WriteLine(s); }
Q.11.
What will be the output of the following C# code snippet? static void Main(string[] args) { string s = " i love you"; Console.WriteLine(s.IndexOf('l') + " " + s.lastIndexOf('o') + " " + s.IndexOf('e')); Console.ReadLine(); }