gs gs108 Data Types, Variables and Operators - Char Types and String Literals - Quiz No.1
gs gs108 CSharp Quiz
This quiz belongs to book/course code gs gs108 CSharp of gs organization. We have 110 quizzes available related to the book/course CSharp. This quiz has a total of 10 multiple choice questions (MCQs) to prepare and belongs to topic Data Types, Variables and Operators. NVAEducation wants its users to help them learn in an easy way. For that purpose, you are free to prepare online MCQs and quizzes.
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Question 1: What is the Size of ‘Char’ datatype?
8 bit
12 bit
16 bit
20 bit
Question 2: What will be the output of the following C# code?
static void Main(string[] args) { char c = 'g'; string s = c.ToString(); string s1 = "I am a human being" + s; Console.WriteLine(s1); Console.ReadLine(); }
I am a human being c
I am a human beingg
I am a human being g
I am a human being
Question 3: Given is the code of days(example:”MTWTFSS”) which I need to split and hence create a list of days of week in strings( example:”Monday”, “Tuesday”, “Wednesday”, “Thursday”, “Friday”, “Saturday”, “Sunday”). A set of code is given for this purpose but there is the error occurring in that set of code related to the conversion of char to strings. Hence, Select a C# code to solve the given error.
static void Main(string[] args) { var days = "MTWTFSS"; var daysArray = days.ToCharArray().Cast<string>().ToArray(); for (var i = 0; i < daysArray.Length; i++) { switch (daysArray[i]) { case "M": daysArray[i] = "Monday"; break; case "T": daysArray[i] = "Tuesday"; break; case "W": daysArray[i] = "Wednesday"; break; case "R": daysArray[i] = "Thursday"; break; case "F": daysArray[i] = "Friday"; break; case "S": daysArray[i] = "Saturday"; break; case "U": daysArray[i] = "Sunday"; break; } } daysArray[daysArray.Length - 1] = "and " + daysArray[daysArray.Length - 1]; Console.WriteLine(string.Join(", ", daysArray)); }
var daysArray = new List<String>();
var daysArray = days.Select(c =>dayMapping[c]).ToArray();
var daysArray = days.ToCharArray().Select(c =>c.Tostring()).ToArray();
var daysArray = days.Select<String>();
Question 4: What will be the output of the following C# code?
static void Main(string[] args) { { var dayCode = "MTWFS"; var daysArray = new List<string>(); var list = new Dictionary<string, string> { {"M", "Monday"}, {"T", "Tuesday"}, {"W", "Wednesday"}, {"R", "Thursday"}, {"F", "Friday"}, {"S", "Saturday"}, {"U", "Sunday"} }; for (int i = 0,max = dayCode.Length; i < max; i++) { var tmp = dayCode[i].ToString(); if (list.ContainsKey(tmp)) { daysArray.Add(list[tmp]); } } Console.WriteLine(string.Join("\n ", daysArray)); }
Monday, Tuesday, Wednesday, Friday, Saturday, Sunday
Monday Tuesday Wednesday Friday SundayMonday Tuesday Wednesday Friday Saturday
Monday, Tuesday, Wednesday, Friday, Saturday
Question 6: Which is the String method used to compare two strings with each other?
Compare To()
Compare()
Copy()
ConCat()
Question 8: For two strings s1 and s2 to be equal, which is the correct way to find if the contents of two strings are equal?
if(s1 = s2)
int c; c = s1.CompareTo(s2);
if (s1 is s2)
if(strcmp(s1, s2))
Question 10: Select the appropriate set of C# code for conversion of string to hexa form.
static void Main(string[] args) { string teststring = "MIKA@?&"; string hex = ConvertstringToHex(teststring, system.Text.Encoding.Unicode); Console.WriteLine(hex); } static string ConvertstringToHex(string input, system.Text.Encoding encoding) { string Bytes = encoding.GetBytes(input); string Builder sbBytes = new Builder sbBytes(); for each (byte 'b' in StringBytes) { sBytes.AppendFormat("{0:x2}", b); } return sbBytes.Tostring(); } static string ConvertstringToHex(string input, system.Text.Encoding encoding) { char[]string Bytes = encoding.GetBytes(input); string Builder sbBytes = new Builder sbBytes(StringBytes.Length*2); for each (byte 'b' in StringBytes) { sBytes.AppendFormat("{0:X2}", b); } return sbBytes.Tostring(); } public static string ConvertStringToHex(String input, System.Text.Encoding encoding) { { Byte[] stringBytes = encoding.GetBytes(input); StringBuilder sbBytes = new StringBuilder(stringBytes.Length * 2); foreach (byte b in stringBytes) { sbBytes.AppendFormat("{0:X2}", b); } Console.WriteLine(sbBytes.ToString());//sbBytes.ToString()); return sbBytes.ToString(); } }
None of the mentioned
