Welcome to the Functions and Subroutines MCQs Page
Dive deep into the fascinating world of Functions and Subroutines with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Functions and Subroutines, a crucial aspect of C# programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Functions and Subroutines, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C# programming.
Check out the MCQs below to embark on an enriching journey through Functions and Subroutines. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C# programming.
Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Functions and Subroutines. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!
Functions and Subroutines MCQs | Page 1 of 3
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namespace CompSciBitsConsoleApplication
{
class SampleProgram
{
static void Main(string[] args)
{
int num = 1;
funcv(num);
Console.Write(num + ", ");
funcr(ref num);
Console.Write(num + ", ");
}
static void funcv(int num)
{
num = num + 10; Console.Write(num + ", ");
}
static void funcr (ref int num)
{
num = num + 10; Console.Write(num + ", ");
}
}
}
namespace CompSciBitsConsoleApplication
{
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 ] + " ");
}
}
}
}1. An argument passed to a ref parameter need not be initialized first.
2. Variables passed as out arguments need to be initialized prior to being passed.
3. Argument that uses params keyword must be the last argument of variable argument list of a method.
4. Pass by reference eliminates the overhead of copying large data items.
5. To use a ref parameter only the calling method must explicitly use the ref keyword.
1. A function cannot be called from a subroutine.
2. The ref keyword causes arguments to be passed by reference.
3. 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.
4. A subroutine cannot be called from a function.
5. Functions and subroutines can be called recursively.
namespace CompSciBitsConsoleApplication
{
class SampleProgram
{
static void Main(string[] args)
{
int a = 5;
int s = 0, c = 0;
Proc(a, ref s, ref c);
Console.WriteLine(s + " " + c);
}
static void Proc(int x, ref int ss, ref int cc)
{
ss = x * x;
cc = x * x * x;
}
}
}
namespace CompSciBitsConsoleApplication
{
class SampleProgram
{
static void Main(string[ ] args)
{
int i = 10;
double d = 34.340;
fun(i);
fun(d);
}
static void fun(double d)
{
Console.WriteLine(d + " ");
}
}
}1. C# allows a function to have arguments with default values.
2. C# allows a function to have variable number of arguments.
3. Omitting the return value type in method definition results into an exception.
4. Redefining a method parameter in the method's body causes an exception.
5. params is used to specify the syntax for a function with variable number of arguments.
{ ... }
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