Control Instructions Questions

• Which of the following can be used to terminate a while loop and transfer control outside the loop? exit while continue exit statement break goto
• Which of the following statements are correct? A switch statement can act on numerical as well as Boolean types. A switch statement can act on characters, strings and enumerations types. We cannot declare variables within a case statement if it is not enclosed by { }. The foreach statement is used to iterate through the collection to get the desired information and should be used to change the contents of the collection to avoid unpredictable side effects. All of the expressions of the for statement are not optional.
• What will be the output of the C#.NET code snippet given below? int val; for (val = -5; val <= 5; val++) { switch (val) { case 0: Console.Write ("India"); break; } if (val > 0) Console.Write ("B"); else if (val < 0) Console.Write ("X"); }
• Which of the following statements is correct?
• What will be the output of the code snippet given below? int i; for(i = 0; i<=10; i++) { if(i == 4) { Console.Write(i + " "); continue; } else if (i != 4) Console.Write(i + " "); else break; }
• Which of the following statements are correct about the C#.NET code snippet given below? if (age > 18 && no < 11) a = 25; The condition no < 11 will be evaluated only if age > 18 evaluates to True. The statement a = 25 will get executed if any one condition is True. The condition no < 11 will be evaluated only if age > 18 evaluates to False. The statement a = 25 will get executed if both the conditions are True. && is known as a short circuiting logical operator.
• What will be the output of the C#.NET code snippet given below? int i = 2, j = i; if (Convert.ToBoolean((i | j & 5) & (j - 25 * 1))) Console.WriteLine(1); else Console.WriteLine(0);
• What will be the output of the C#.NET code snippet given below? char ch = Convert.ToChar ('a' | 'b' | 'c'); switch (ch) { case 'A': case 'a': Console.WriteLine ("case A | case a"); break; case 'B': case 'b': Console.WriteLine ("case B | case b"); break; case 'C': case 'c': case 'D': case 'd': Console.WriteLine ("case D | case d"); break; }
• Which of the following statements is correct about the C#.NET code snippet given below? int i, j, id = 0; switch (id) { case i: Console.WriteLine("I am in Case i"); break; case j: Console.WriteLine("I am in Case j"); break; }
• Which of the following statements is correct about the C#.NET code snippet given below? switch (id) { case 6: grp = "Grp B"; break; case 13: grp = "Grp D"; break; case 1: grp = "Grp A"; break; case ls > 20: grp = "Grp E"; break ; case Else: grp = "Grp F"; break; }
• What is the output of the C#.NET code snippet given below? namespace CuriousTabConsoleApplication { public enum color { red, green, blue }; class SampleProgram { static void Main (string[ ] args) { color c = color.blue; switch (c) { case color.red: Console.WriteLine(color.red); break; case color.green: Console.WriteLine(color.green); break; case color.blue: Console.WriteLine(color.blue); break; } } } }
• Which of the following is another way to rewrite the code snippet given below? int a = 1, b = 2, c = 0; if (a < b) c = a;
• Which of the following is the correct way to rewrite the following C#.NET code snippet given below? int i = 0; do { Console.WriteLine(i); i+ = 1; } while (i <= 10);
• Which of the following is the incorrect form of Decision Control instruction?
• Which of the following is the correct output for the C#.NET program given below? int i = 20 ; for( ; ; ) { Console.Write(i + " "); if (i >= -10) i -= 4; else break; }
• Which of the following loop correctly prints the elements of the array? char[ ] arr = new char[ ] {'k', 'i','C', 'i','t'} ;
• Which of the following code snippets are the correct way to determine whether a is Odd or Even? int a; String res; if (a % 2 == 0) res = "Even"; else res = "Odd"; int a; String res; if (a Mod 2 == 0) res = "Even"; else res = "Odd"; int a; Console.WriteLine(a Mod 2 == 0? "Even": "Odd"); int a; String res; a % 2 == 0? res = "Even" : res = "Odd"; Console.WriteLine(res);
• What does the following C#.NET code snippet will print? int i = 0, j = 0; label: i++; j+=i; if (i < 10) { Console.Write(i +" "); goto label; }
• Which of the following statements are correct about the C#.NET code snippet given below? if (age > 18 || no < 11) a = 25; The condition no < 11 will get evaluated only if age > 18 evaluates to False. The condition no < 11 will get evaluated if age > 18 evaluates to True. The statement a = 25 will get evaluated if any one one of the two conditions is True. || is known as a short circuiting logical operator. The statement a = 25 will get evaluated only if both the conditions are True.
• The C#.NET code snippet given below generates ____ numbers series as output? int i = 1, j = 1, val; while (i < 25) { Console.Write(j + " "); val = i + j; j = i; i = val; }