AQA A LEVEL COMPUTER SCIENCE PAPER 2
AQA A LEVEL Computer
Science PAPER 2
AQA A LEVEL Computer
Science PAPER 2
H046-FREV-P2-2.3
INSTRUCTIONS TO CANDIDATES
• Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters.
• Use black ink. HB pencil may be used for graphs and diagrams only.
• Answer all the questions, unless your teacher tells you otherwise.
• Read each question carefully. Make sure you know what you have to do before starting your answer.
• Where space is provided below the question, please write your answer there.
• You may use additional paper, or a specific Answer sheet if one is provided, but you must clearly show your candidate
number, centre number and question number(s).
INFORMATION FOR CANDIDATES
• The quality of written communication is assessed in questions marked with either a pencil or an asterisk. In History and
Geography a Quality of extended response question is marked with an asterisk, while a pencil is used for questions in
which Spelling, punctuation and grammar and the use of specialist terminology is assessed.
• The number of marks is given in brackets [ ] at the end of each question or part question.
• The total number of marks for this paper is 91.
• The total number of marks may take into account some 'either/or' question choices.
1(a) A program corrects the grammar in a line of text. The text is read in from a text file.
The function, getText, needs to:
• take the file name as a parameter
• open the file
• read the line of data in the text file into one string • return the string of data.
, Write the function getText.
[4]
(b) The procedure, fullStop, needs to:
• ask for a file name as input
• read the data from the file using the function getText
• replace the first letter after each full stop with a capital letter if it is currently lower case (if the next character is a space,
it must check each successive character until it finds a letter)
• write the edited data back to the text file.
You can assume the text file only contains upper and lower case letters, spaces and full stops.
,AQA A LEVEL COMPUTER SCIENCE PAPER 2
Part of the ASCII table has been provided:
ASCII Value Character
65 "A"
90 "Z"
97 "a"
122 "z"
32 " " (space)
46 "." (full stop)
The following functions may be used in your answer:
asc(character) returns the ASCII value for a single character, e.g. asc("A") would return 65.
upper(character) returns the single character in upper case, e.g. upper("a") would return “A”.
Write the procedure fullStop.
, (i) Give one reason why a function is used instead of a procedure in this scenario.
[1]
(ii) The parameter can be passed by value or by reference.
AQA A LEVEL Computer
Science PAPER 2
AQA A LEVEL Computer
Science PAPER 2
H046-FREV-P2-2.3
INSTRUCTIONS TO CANDIDATES
• Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters.
• Use black ink. HB pencil may be used for graphs and diagrams only.
• Answer all the questions, unless your teacher tells you otherwise.
• Read each question carefully. Make sure you know what you have to do before starting your answer.
• Where space is provided below the question, please write your answer there.
• You may use additional paper, or a specific Answer sheet if one is provided, but you must clearly show your candidate
number, centre number and question number(s).
INFORMATION FOR CANDIDATES
• The quality of written communication is assessed in questions marked with either a pencil or an asterisk. In History and
Geography a Quality of extended response question is marked with an asterisk, while a pencil is used for questions in
which Spelling, punctuation and grammar and the use of specialist terminology is assessed.
• The number of marks is given in brackets [ ] at the end of each question or part question.
• The total number of marks for this paper is 91.
• The total number of marks may take into account some 'either/or' question choices.
1(a) A program corrects the grammar in a line of text. The text is read in from a text file.
The function, getText, needs to:
• take the file name as a parameter
• open the file
• read the line of data in the text file into one string • return the string of data.
, Write the function getText.
[4]
(b) The procedure, fullStop, needs to:
• ask for a file name as input
• read the data from the file using the function getText
• replace the first letter after each full stop with a capital letter if it is currently lower case (if the next character is a space,
it must check each successive character until it finds a letter)
• write the edited data back to the text file.
You can assume the text file only contains upper and lower case letters, spaces and full stops.
,AQA A LEVEL COMPUTER SCIENCE PAPER 2
Part of the ASCII table has been provided:
ASCII Value Character
65 "A"
90 "Z"
97 "a"
122 "z"
32 " " (space)
46 "." (full stop)
The following functions may be used in your answer:
asc(character) returns the ASCII value for a single character, e.g. asc("A") would return 65.
upper(character) returns the single character in upper case, e.g. upper("a") would return “A”.
Write the procedure fullStop.
, (i) Give one reason why a function is used instead of a procedure in this scenario.
[1]
(ii) The parameter can be passed by value or by reference.
