1. Introduction To Programming Information Technology , 1’st Semester
MINISTRY OF EDUCATION & HIGHER EDUCATION
COLLEGE OF SCIENCE AND TECHNOLOGY
KHANYOUNIS- PALESTINE
Using Java
Introduction To Programming Information Technology , 1’st Semester
Lecture 11
Repetition Statements
Practices
Teacher: Mahmoud Rafeek Alfarra

2. Practice 1
Identify and correct the errors in each of the following pieces of code.
int x = 1,
total;
while ( x <= 10 )
{ total += x; ++x; }
Presented & Prepared by: Mahmoud R. Alfarra

3. Practice 1
Identify and correct the errors in each of the following pieces of code.
while ( x <= 100 )
total += x;
++x;
while ( y > 0 ) {
System.out.println( y );
++y;
Presented & Prepared by: Mahmoud R. Alfarra

4. Practice 1
Identify and correct the errors in each of the following pieces of code.
for ( i = 100, i >= 1, i++ )
System.out.println( i );
The following code should output the odd integers from 19 to 1:
for ( i = 19; i >= 1; i += 2 )
Presented & Prepared by: Mahmoud R. Alfarra

5. Practice 1
Identify and correct the errors in each of the following pieces of code.
The following code should print whether integer value is odd or even:
switch ( value % 2 ) {
case 0:
System.out.println( "Even integer" );
case 1:
System.out.println( "Odd integer" ); }
Presented & Prepared by: Mahmoud R. Alfarra

6. Practice 1
Identify and correct the errors in each of the following pieces of code.
The following code should output the even integers from 2 to 100:
counter = 2; do {
System.out.println( counter );
counter += 2 ;
} While ( counter < 100 );
Presented & Prepared by: Mahmoud R. Alfarra

7. Practice 2 Trace the following program:
Presented & Prepared by: Mahmoud R. Alfarra

8. Practice 3 Trace the following program:
Presented & Prepared by: Mahmoud R. Alfarra

9. Practice 3 Trace the following program:
Presented & Prepared by: Mahmoud R. Alfarra

10. Practice 4 Trace the following program:
Presented & Prepared by: Mahmoud R. Alfarra

11. Practice 5 Trace the following program:
Presented & Prepared by: Mahmoud R. Alfarra

12. Practice 5 Trace the following program:
Presented & Prepared by: Mahmoud R. Alfarra

13. Practice 6
Write an application that finds the smallest of several integers. Assume that the first value read specifies the number of values to input from the user.
Presented & Prepared by: Mahmoud R. Alfarra

14. Practice 7
Write an application that calculates the product of the odd integers from 1 to 15.
Presented & Prepared by: Mahmoud R. Alfarra

15. Practice 8
Write an application that prints the following diamond shape. You may use output statements that print a single asterisk (*), a single space or a single newline character. Maximize your use of repetition, and minimize the number of output statements.
Presented & Prepared by: Mahmoud R. Alfarra

16. More practices in the text book, chapters 4 and 5
Presented & Prepared by: Mahmoud R. Alfarra

17. Emank X Mezank
من أعظم الاسباب التي ترفع درجة الإيمان للعبـد أن:
يتق الله
Presented & Prepared by: Mahmoud R. Alfarra

18. Next…
Practices
Presented & Prepared by: Mahmoud R. Alfarra