Faculty of Computer Studies Course Code: M107 Course Title: Introduction to C# Programming Spring 2015- 2016-Tutor Marked Assignment- Solution Cut-Off Date: Total Marks: 80 Contents Part I: Theoretical Questions [20 Marks] Part II: Outpu

Faculty of Computer Studies
Course Code: M107
Course Title: Introduction to C# Programming
Spring 2015- 2016-Tutor Marked Assignment- Solution
Cut-Off Date: Total Marks: 80
Contents
Part I: Theoretical Questions [20 Marks]
Part II: Output and Debugging Questions [20 Marks]
Part III: Problem Solving Questions [40 Marks]

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Part I: Theoretical Questions (4 marks each) [20 Marks]


1. What is Common Type System (CTS) in .NET?

2. State the differences between dispose ( ) and finalize ( ).

3. Differentiate between an abstract class and interface in C#.

4. What is a static class? Explain with an example.

5. Consider the following program. Convert if-else statement into switch-case and all three for loops to while loops.
class Program
{

static void Main(string[] args)
{
int a,i;
a = 1;
if (a == 1)
for (i = 0; i < 2; i++)
{
Console.WriteLine("morning");
}
else if (a==2)
for (i = 0; i < 2; i++)
{
Console.WriteLine("evening");
}
else
for (i = 0; i < 2; i++)
{
Console.WriteLine("night");
}
Console.ReadLine();
}
}

Part II: Output and Debugging Questions (10 marks each) [20 Marks]

1. What is the output of the following program? [10 Marks]

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int i, j;
int[, ] arr = new int[ 5, 5];
for (i = 0; i < 5; ++i)
{
for (j = 0; j < 5; ++j)
{
arr[i, j] = i * 2 + i * 2;
Console.Write(arr[i, j] + " ");
}
Console.ReadLine();
}
}
}}

2. What is the output of the following program? [6 Marks]

namespace ConsoleApplication1
{
struct Sample
{
public int i;
}
class Program
{
static void Main(string[] args)
{
Sample x = new Sample();
x.i = 10;
fun(ref x);
Console.Write(x.i + " ");
Console.ReadLine();
}
public static void fun(ref Sample y)
{
y.i = 20;
Console.Write(y.i + " ");
}
}
}
3. Consider the following program. Will it generate an output? If no, explain the reason. [4 marks]

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int I, X;
for (I = 1; I <= (9 % 2 + I); I++)
{
X = (I * 3 + I * 2) / I;
Console.WriteLine(X);
}
Console.ReadLine();
}
}
}


Part III- Problem Solving Questions [40 Marks]

1. Using loops, write a C# program to print the following pattern. [10 Marks]


1******
12*****
123****
1234***
12345**
123456*
1234567

2. Write a C# application that asks the user to input the required data to implement the four methods below: [15 Marks]
(Use Method Overloading to write the methods)
a. Method Addition that take as input two int values ‘a’ and ‘b’, calculates the sum, and displays it.
b. Method Addition that take as input three int values ‘a’ , ‘b’ and ‘c’, calculates the sum, and displays it.
c. Method Addition that takes as input two float values ‘p’ and ‘q’, calculates the sum, and displays it.
d. Method Addition that take as input three float values ‘p’ , ‘q’ and ‘r’, calculates the sum, and displays it.

Sample Input & Output


3. Write a C# application that asks the user to input ‘A’ and ‘B’ and prints the sum of squares of all even numbers between ‘A’ and ‘B’. [15 Marks]
Sample Input & Output