1. مقدمة في البرمجة Lecture 7

2. Write VB.net project using the for loop to calculate : 1- the sum of numbers from 1 to (A) numbers. 2- the sum of Odd numbers from 1 to (A) numbers. 3- the sum of Even numbers from 1 to (A) numbers. ** (A : any number input by user).

3. Create an Interface, Change properties:

4. Write a code : Double click on : 1- Button 1 : Dim i, a, x as integer a = Val(textbox1.text) x=0 For i =1 to a x= x + i Next i Textbox2.text = x

5. Write a code : Double click on : 2- Button 2 : Dim i, a, x as integer a = Val(textbox1.text) x=0 For i =1 to a step 2 x= x + i Next i Textbox3.text = x

6. Write a code : Double click on : 3- Button 3 : Dim i, a, x as integer a = Val(textbox1.text) x=0 For i =0 to a step 2 x= x + i Next i Textbox4.text = x

7. Write a code : Double click on : 4- Button 4 : Textbox1.text = “ “ Textbox2.text = “ “ Textbox3.text = “ “ Textbox4.text = “ “

8. Execute a program: - Input a number :

9. Execute a program: - When we Click on The sum of numbers button, the result will appear :

10. Execute a program: - When we Click on The sum of odd numbers button, the result will appear :

11. Execute a program: - When we Click on The sum of even numbers button, the result will appear :

12. Execute a program: - When we Click on Delete button, all textboxes will be clean:

13. Write VB.net project using the Do / While loop to calculate : 1- the sum of numbers from 1 to (A) numbers. 2- the sum of Odd numbers from 1 to (A) numbers. 3- the sum of Even numbers from 1 to (A) numbers. ** (A : any number input by user).

14. Create an Interface, Change properties:

15. Write a code : Double click on : 1- Button 1 : Dim i, a, x as integer a = Val(textbox1.text) x=0 i = 1 Do while i <= a x= x + i i = i +1 loop Textbox2.text = x

16. Write a code : Double click on : 2- Button 2 : Dim i, a, x as integer a = Val(textbox1.text) x=0 i = 1 Do while i <= a x= x + i i = i +2 loop Textbox3.text = x

17. Write a code : Double click on : 3- Button 3 : Dim i, a, x as integer a = Val(textbox1.text) x = 0 i = 0 Do while i <= a x= x + i i = i +2 loop Textbox4.text = x

18. Write a code : Double click on : 4- Button 4 : Textbox1.text = “ “ Textbox2.text = “ “ Textbox3.text = “ “ Textbox4.text = “ “

19. Execute a program: - Input a number :

20. Execute a program: - When we Click on The sum of numbers button, the result will appear :

21. Execute a program: - When we Click on The sum of odd numbers button, the result will appear :

22. Execute a program: - When we Click on The sum of even numbers button, the result will appear :

23. Execute a program: - When we Click on Delete button, all textboxes will be clean:

24. Write VB.net project using the Do Until Loop to calculate : 1- the sum of numbers from 1 to (A) numbers. 2- the sum of Odd numbers from 1 to (A) numbers. 3- the sum of Even numbers from 1 to (A) numbers. ** (A : any number input by user).

25. Create an Interface, Change properties:

26. Write a code : Double click on : 1- Button 1 : Dim i, a, x as integer a = Val(textbox1.text) x=0 i = 1 Do Until i > a x= x + i i = i +1 loop Textbox2.text = x

27. Write a code : Double click on : 2- Button 2 : Dim i, a, x as integer a = Val(textbox1.text) x=0 i = 1 Do Until i > a x= x + i i = i +2 loop Textbox3.text = x

28. Write a code : Double click on : 3- Button 3 : Dim i, a, x as integer a = Val(textbox1.text) x=0 i = 0 Do Until i > a x= x + i i = i +2 loop Textbox4.text = x

29. Write a code : Double click on : 4- Button 4 : Textbox1.text = “ “ Textbox2.text = “ “ Textbox3.text = “ “ Textbox4.text = “ “

30. Execute a program: - Input a number :

31. Execute a program: - When we Click on The sum of numbers button, the result will appear :

32. Execute a program: - When we Click on The sum of odd numbers button, the result will appear :

33. Execute a program: - When we Click on The sum of even numbers button, the result will appear :

34. Execute a program: - When we Click on Delete button, all textboxes will be clean: