Transcript Introduction To Programming Information Technology , 1’st

MINISTRY OF EDUCATION & HIGHER EDUCATION
COLLEGE OF SCIENCE AND TECHNOLOGY
KHANYOUNIS- PALESTINE
Using Java
Lecture 11
Repetition Statements
Practices
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
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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
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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 )
System.out.println( i );
Presented & Prepared by: Mahmoud R. Alfarra
4
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
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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
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Practice 2
Trace the following program:
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Practice 3
Trace the following program:
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Practice 3
Trace the following program:
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Practice 4
Trace the following program:
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Practice 5
Trace the following program:
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Practice 5
Trace the following program:
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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
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Practice 7

Write an application that calculates the product of
the odd integers from 1 to 15.
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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
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More Practices
 More
practices in
the text book,
chapters 4 and 5
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‫من أعظم االسباب التي ترفع درجة اإليمان للعبـد أن‪:‬‬
‫يتق اهلل‬
‫‪17‬‬
‫‪Presented & Prepared by: Mahmoud R. Alfarra‬‬
Practices
Presented & Prepared by: Mahmoud R. Alfarra
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