2. Looping(1) For … to … do...

3. Can you do this? 123456123456 Write a program to display:

4. Program E1; begin writeln(1); writeln(2); writeln(3); writeln(4); writeln(5); writeln(6); end. Done!

5. What about this? Please enter a number:6 1 2 3 4 5 6 Write a program to display: Please enter a number:4 1 2 3 4

6. Looping Program E1; var j, k:integer; begin write(‘Please enter a number’:); readln(n); for j:=1 to n do writeln(j); end.

7. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:

8. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3

9. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3

10. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3 1

11. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3 1

12. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3 1 2

13. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3 1 2

14. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3 1 2 3

15. How does it work? Program E1; var j, n:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3 1 2 3 j>n

16. How does it work? Program E1; var j, k:integer; begin write(‘Please enter a number:’); readln(n); for j:=1 to n do writeln(j); end. Please enter a number:3 1 2 3

17. FOR … TO … DO… for I:=1 to 5 do writeln(I); writeln(1); writeln(2); writeln(3); writeln(4); writeln(5);

18. FOR … DOWNTO … DO… for I:=5 downto 1 do writeln(I); writeln(5); writeln(4); writeln(3); writeln(2); writeln(1);

19. For with multiple statements Program E1; begin for j:=1 to 3 do begin writeln(j); writeln(‘-’); end; end. 1-2-3-1-2-3-

20. Exercise 1 Program E1; var j, n:integer; begin write(‘Please enter a number’); readln(n); for j:=n to 6 do writeln(j*2); end. Write down the output of the following program if 3 is the input.

21. Exercise 2 Program E1; var j, n:integer; begin write(‘Please enter a number’); readln(n); for j:=n downto 4 do if (j mod 2)=0 then writeln(j div 2) else writeln(j*2); end. Write down the output of the following program if 6 is the input.

22. Exercise 3 Write programs to display: Enter a number:5 Enter a number:10 5 6 7 8 9 10 Enter a number:5 2,4,6,8,10, Enter a number:5 1,3,5,7,9 Enter a number:5 Enter a number:16 6,8,10,12,14,16,

23. Answer Q3 Program E1; var a, b, j:integer; begin write(‘Enter a number:’); readln(a); write(‘Enter a number:’; readln(b); for j:=a to b do writeln(j); end.

24. Answer Q3 Program E1; var a, j:integer; begin write(‘Enter a number:’); readln(a); for j:=1 to a do write(j*2, ’,’); end.

25. Answer Q3 Program E1; var a, j:integer; begin write(‘Enter a number:’); readln(a); for j:=1 to a-1 do write(j*2-1, ’,’); writeln(a*2-1); end.

26. Answer Q3 Program E1; var a, b, j:integer; begin write(‘Enter a number:’); readln(a); write(‘Enter a number:’; readln(b); for j:=a to b do if (j mod 2)=0 then write(j, ’,’); end.