cs101 ОП / Basics of programming ENG

• Loops are used to repeat actions
• Loop consists of: loop header and loop body
• One iteration of loop is one repetition of loop body

Syntax:

loop n do
   some operator;

Example 1:

Output: digit '1' ten times (1111111111)

Example 2:

Output: numbers from '1' up to '10' (12345678910)

✎

1. {0.3 points}[task-01-loop.pas] Integer A (A > 0) is given. Output the word "Hello" A times. The commas have to be between the words.

'Please enter how many times: A ='  3   
>>> Hello, Hello, Hello

2. {0.3 points}[task-02-loop.pas] Two integers K and N (N> 0) are given. Output N times the number K.

'enter the number to output, please:  K= '   4  
'enter how many times to output: N= ' 3  
>>> 4 4 4

3. {0.4 points}[task-03-loop.pas] Integer A (A > 0) is given. Output integers between 0 and A (including the number A) in ascending order and also output the number (quantity) of these numbers.

'Enter a number where to stop: A= '   5   
>>> 0 1 2 3 4 5  quantity = 6
'Enter a number where to stop: A= '   3
 >>> 0 1 2 3 quantity = 4

Example 3:

Output: numbers from '10' downto '1' (10 9 8 7 6 5 4 3 2 1)

✎

4. {0.4 points}[task-04-loop.pas] Integer A (A > 0) is given. Output integers between A and 0 (including the number A) in discending order.

'Enter a number to begin the output:' 5  
>>> result: 5 4 3 2 1 0 
'Enter a number to begin the output:' 3  
>>> result: 3 2 1 0

Example 4:

Output: power of 2 from '0' ; eight powers (1 2 4 8 ... 128).

✎

5. {0.5 points}[task-05-loop.pas] Integer A (A > 0) is given. Output 3 ^A (3 in power of A). For calculating use only multiplication (*). It is forbidden to use functions. To output use the WritelnFormat() statement.

'Enter a number - power of 3: A= '  4   
>>> 3 in the power of 4 = 81
'Enter a number - power of 3: A= ' 2  
>>> 3 in the power of 2 = 9