Explore topic-wise MCQs in General Awareness.

 String s1 = "Five Star"; String s2 = "FIVE STAR"; int c; c = s1.CompareTo(s2); Console.WriteLine(c);  

1. if(s1 = s2) 2. if(s1 == s2) 3. int c; c = s1.CompareTo(s2); 4. if( strcmp(s1, s2) ) 5. if (s1 is s2) 

1. Two strings can be concatenated by using an expression of the form s3 = s1 + s2;
2. String is a primitive in C#.NET.
3. A string built using StringBuilder Class is Mutable.
4. A string built using String Class is Immutable.
5. Two strings can be concatenated by using an expression of the form s3 = s1&s2;

1. String is a value type.
2. String literals can contain any character literal including escape sequences.
3. The equality operators are defined to compare the values of string objects as well as references.
4. Attempting to access a character that is outside the bounds of the string results in an IndexOutOfRangeException.
5. The contents of a string object can be changed after the object is created.

int[][]intMyArr = new int[2][]; intMyArr[0] = new int[4]{6, 1, 4, 3}; intMyArr[1] = new int[3]{9, 2, 7}; 

  1. int[ , ] a; a = new int[2, 3]{{7, 1, 3},{2, 9, 6}}; 2. int[ , ] a; a = new int[2, 3]{}; 3. int[ , ] a = {{7, 1, 3}, {2, 9,6 }}; 4. int[ , ] a; a = new int[1, 2]; 5. int[ , ] a; a = new int[1, 2]{{7, 1, 3}, {2, 9, 6}};  

  int[][][] intMyArr = new int[2][][];  

 int[] intMyArr = {11, 3, 5, 9, 4};  

 int[][] a = new int[2][]; a[0] = new int[4]{6, 1, 4, 3}; a[1] = new int[3]{9, 2, 7}; Console.WriteLine(a[1].GetUpperBound(0));  

  1. int[] a = {25, 30, 40, 5}; 2. int[] a; a = new int[3]; a[0] = 25; a[1] = 30; a[2] = 40; a[3] = 5; 3. int[] a; a = new int{25, 30, 40, 5}; 4. int[] a; a = new int[4]{25, 30, 40, 5}; 5. int[] a; a = new int[4]; a[0] = 25; a[1] = 30; a[2] = 40; a[3] = 5;  

  namespace CompScibitsConsoleApplication { class SampleProgram { static void Main(string[ ] args) { int i, j; int[ , ] arr = new int[ 2, 2 ]; for(i = 0; i < 2; ++i) { for(j = 0; j < 2; ++j) { arr[i, j] = i * 17 + i * 17; Console.Write(arr[ i, j ] + " "); } } } } }  

  int[] intMyArr = {25, 30, 45, 15, 60}; 1. intMyArr.GetMax; 2. intMyArr.Highest(0); 3. intMyArr.GetUpperBound(0); 4. intMyArr.Length; 5. intMyArr.GetMaxElements(0);  

1. Static functions can access only static data.
2. Static functions cannot call instance functions.
3. It is necessary to initialize static data.
4. Instance functions can call static functions and access static data.
5. this reference is passed to static functions.

 namespace ConsoleApplication { class Sample { public int func() { return 1; } public Single func() { return 2.4f ; } } class Program { static void Main(string[ ] args) { Sample s1 = new Sample(); int i; i = s1.func(); Single j; j = s1.func(); } } }  

 class Sample { int i; Single j; double k; public Sample (int ii, Single jj, double kk) { i = ii; j = jj; k = kk; } }  

 class static_out { public static int x; public static int y; public int add(int a, int b) { x = a + b; y = x + b; return 0; } } class Program { static void Main(string[] args) { static_out obj1 = new static_out(); static_out obj2 = new static_out(); int a = 2; obj1.add(a, a + 1); obj2.add(5, a); Console.WriteLine(static_out.x + " " + static_out.y ); Console.ReadLine(); } }  

1. Type of arguments
2. Return type of methods
3. Number of arguments
4. Names of methods
5. Order of arguments

 Sample s1 = new Sample(); Sample s2 = new Sample(9, 5.6f);  

1. Constructors cannot be overloaded.
2. Constructors always have the name same as the name of the class.
3. Constructors are never called explicitly.
4. Constructors never return any value.
5. Constructors allocate space for the object in memory.

 class test { public int a; public int b; public test(int i, int j) { a = i; b = j; } public void meth(test o) { o.a *= 2; o.b /= 2; } } class Program { static void Main(string[] args) { test obj = new test(10, 20); obj.meth(obj); Console.WriteLine(obj.a + " " + obj.b); Console.ReadLine(); } }  

 class sample { public int i; public int[] arr = new int[10]; public void fun(int i, int val) { arr[i] = val; } } class Program { static void Main(string[] args) { sample s = new sample(); s.i = 10; sample.fun(1, 5); s.fun(1, 5); Console.ReadLine(); } }  

 class sample { public int i; public int j; public void fun(int i, int j) { this.i = i; this.j = j; } } class Program { static void Main(string[] args) { sample s = new sample(); s.i = 1; s.j = 2; s.fun(s.i, s.j); Console.WriteLine(s.i + " " + s.j); Console.ReadLine(); } }  

 static void Main(string[] args) { int[] arr = new int[] {1 ,2 ,3 ,4 ,5 }; fun1(ref arr); Console.ReadLine(); } static void fun1(ref int[] array) { for (int i = 0; i < array.Length; i++) { array[i] = array[i] + 5; Console.WriteLine(array[i] + " "); } }  

 static void Main(string[] args) { int []a = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; func(ref a); Console.ReadLine(); } static void func(ref int[] x) { Console.WriteLine(" numbers are:"); for (int i = 0; i < x.Length; i++) { if (x[i] % 2 == 0) { x[i] = x[i] + 1; Console.WriteLine(x[i]); } } }  

 static void Main(string[] args) { int X = 0; if (Convert.ToBoolean(X = 0)) Console.WriteLine("It is zero"); else Console.WriteLine("It is not zero"); Console.ReadLine(); }  

 static void Main(string[] args) { int X = 6,Y = 2; X *= X / Y; Console.WriteLine(X); Console.ReadLine(); }  

 static void Main(string[] args) { int x = 4 ,b = 2; x -= b/= x * b; Console.WriteLine(x + " " + b); Console.ReadLine(); }  

 int a+= (float) b/= (long)c  

 static void Main(string[] args) { int x = 8; int b = 16; int C = 64; x /= b /= C; Console.WriteLine(x + " " + b+ " " +C); Console.ReadLine(); }  

 static void Main(string[] args) { int x = 8; int b = 16; int C = 64; x /= b /= C; Console.WriteLine(x + " " + b+ " " +C); Console.ReadLine(); }static void Main(string[] args) { int a = 5; int s = 0, c = 0; Mul (a, ref s, ref c); Console.WriteLine(s + "t " +c); Console.ReadLine(); } static void Mul (int x, ref int ss, ref int cc) { ss = x * x; cc = x * x * x; }  

 static void Main(string[] args) { Mul(); m(); Console.ReadLine(); } static void Mul() { Console.WriteLine("4"); } static void m() { Console.WriteLine("3"); Mul(); }  

 static void Main(string[] args) { m(); Console.ReadLine(); } static void m() { Console.WriteLine("HI"); m(); }  

 class z { public string name1; public string address; public void show() { Console.WriteLine("{0} is in city{1}", name1, " ", address); } } class Program { static void Main(string[] args) { z n = new z(); n.name1 = "harsh"; n.address = "new delhi"; n.show(); Console.ReadLine(); } }  

 csharp abc; abc = new charp();  

 class test { public void print() { Console.WriteLine("Csharp:"); } } class Program { static void Main(string[] args) { test t; t.print(); Console.ReadLine(); } }  

 static void Main(string[] args) { int a = 5; fun1 (ref a); Console.WriteLine(a); Console.ReadLine(); } static void fun1(ref int a) { a = a * a; }  

 class Student s1, s2; // Here 'Student' is a user-defined class. s1 = new Student(); s2 = new Student();  

 class Sample { private int i; public Single j; private void DisplayData() { Console.WriteLine(i + " " + j); } public void ShowData() { Console.WriteLine(i + " " + j); } }  

1. Instance members of a class can be accessed only through an object of that class.
2. A class can contain only instance data and instance member function.
3. All objects created from a class will occupy equal number of bytes in memory.
4. A class can contain Friend functions.
5. A class is a blueprint or a template according to which objects are created.

 1. Sample s = new Sample(); 2. Sample s; 3. Sample s; s = new Sample(); s = new Sample();  

 namespace McqsMentorConsoleApplication { class Sample { int i; Single j; public void SetData(int i, Single j) { i = i; j = j; } public void Display() { Console.WriteLine(i + " " + j); } } class MyProgram { static void Main(string[ ] args) { Sample s1 = new Sample(); s1.SetData(10, 5.4f); s1.Display(); } } }  

1. Data members ofa class are by default public.
2. Data members of a class are by default private.
3. Member functions of a class are by default public.
4. A private function of a class can access a public function within the same class.
5. Member function of a class are by default private.

 static void Main(string[] args) { int y = 3; y++; if (y <= 5) { Console.WriteLine("hi"); Main(args); } Console.ReadLine(); }  

 public static void Main(string[] args) { p(); void p() { Console.WriteLine("hi"); } }