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Functions and Subroutines
If a function fun() is to sometimes receive an int and sometimes a double then which of the following is the correct way of defining this function?
static void fun(object i) { ... }
static void fun(int i) { ... }
static void fun(double i, int j) { ... }
static void fun(int i, double j) { ... }
static void fun(int i, double j, ) { ... }
Correct Answer:
static void fun(object i) { ... }
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Functions and Subroutines
A function returns a value, whereas a subroutine cannot return a value.
A function can be used in an expression, whereas a subroutine cannot be.
What will be the output of the C#.NET code snippet given below? namespace CuriousTabConsoleApplication { class SampleProgram { static void Main(string[ ] args) { int i = 5; int j; fun1(ref i); fun2(out j); Console.WriteLine(i + ", " + j); } static void funl(ref int x) { x = x * x; } static void fun2(out int x) { x = 6; x = x * x; } } }
What will be the output of the C#.NET code snippet given below? namespace CuriousTabConsoleApplication { class SampleProgram { static void Main(string[] args) { int[]arr = newint[]{ 1, 2, 3, 4, 5 }; fun(ref arr); } static void fun(ref int[] a) { for (int i = 0; i < a.Length; i++) { a[i] = a[i] * 5; Console.Write(a[ i ] + " "); } } } }
Which of the following CANNOT occur multiple number of times in a program?
How many values is a function capable of returning?
Which of the following statements are correct about functions used in C#.NET? Function definitions cannot be nested. Functions can be called recursively. If we do not return a value from a function then a value -1 gets returned. To return the control from middle of a function exit function should be used. Function calls can be nested.
If a procedure fun() is to receive an int, a Single & a double and it is to return a decimal then which of the following is the correct way of defining this procedure?
Which of the following statements are correct about functions and subroutines used in C#.NET? A function cannot be called from a subroutine. The ref keyword causes arguments to be passed by reference. While using ref keyword any changes made to the parameter in the method will be reflected in that variable when control passes back to the calling method. A subroutine cannot be called from a function. Functions and subroutines can be called recursively.
Which of the following statements are correct? C# allows a function to have arguments with default values. C# allows a function to have variable number of arguments. Omitting the return value type in method definition results into an exception. Redefining a method parameter in the method's body causes an exception. params is used to specify the syntax for a function with variable number of arguments.
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