Lesson 10 to 13

• In programming, repetitive tasks are often performed and need to be executed efficiently. To handle this scenario, repetition control structures, also referred to as loops, are used. These enable a certain block of code to be executed multiple times based on specific conditions.
• By using loops, the programmers can minimize code redundancy, improve the clarity of codes, and manage complex computations easily.
• Entry controlled loops - it evaluate the condition first before entering the loop body.

  • while loop
  • for loop
• Exit controlled loop - the condition is evaluated at the end of the loop body.

  • do while loop
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  A) Loops

  B) Entry Controlled

  C) for

  D) while

  E) Exit Controlled

  F) do-while

  
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  A) while

  B) expression

  C) statement

  D) while

  E) expression

  F) true

  G) statement

  H) false

  I) statement

  J) expression

  K) true

  
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  A) Loop Control Variable (LCV)

  B) Initialize

  C) LCV

  D) evaluate

  E) expression

  F) LCV

  G) executes

  H) inside

  I) expression

  J) true

  K) LCV

  
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  A) 012345Thank You!

  B) vertically aligned because of endl;

  
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  A) 0123456Thank you!

  B) vertically aligned bacause of endl

  
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  A) Infinity 0

  
• Various forms of while loop

  Case 1: Counter-Controlled while loops

  Case 2: Sentinel-Controlled while loops

  Case 3: Flag-Controlled while loops
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  A) user input value

  
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  A) counter=0;

  B) while(counter<n)

  C) {

  D) counter++;

  E) }

  
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  A) cin>>variable;

  B) while(variable!=sentinel)

  C) {

  D) cin>>variable;

  E) }

  
• Observe:

  
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  A) isFound=false;

  B) while(!isFound)

  C) {

  D) if(expression)

  E) isFound=true

  F) }

  G) boolean variable

  H) flag variable

  I) true

  J) false

  
• Observe:

  
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  A) for

  B) (initial statement; loop condition; update statement)

  C) statement

  D) initial statement

  E) loop condition

  F) true

  G) statement

  H) update statement

  I) false

  J) for loop control

  K) for indexed

  L) variable

  M) true

  N) update statement

  O) true

  P) terminated

  
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  A) 012345Thank you!

  
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  A) 012345*Thank you!

  B) compound statements

  
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  A) 0*1*2*3*4*5*Thank you!

  
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  A) 6Thank you!

  B) semicolon

  
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  A) Infinite Hello World!

  
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  A) break

  
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  A) continue

  
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  A) do

  B) statement

  C) while(expression);

  D) statement

  E) expression

  F) true

  G) false

  H) initialize

  I) execute

  J) update

  K) evaluate

  L) true

  M) false

  
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  A) 012345Thank you!

  
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  A) Thank you!

  B) 6Thank you!

  
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  A) Nested loop

  B) nested loop

  C) inner loop

  D) true

  E) inner loop

  
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  A) five