Exam (elaborations)
COS1511 EXAM PACK 2023
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- University Of South Africa
COS1511 EXAM PACK 2023
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COS1511EXAM
PACK 2023
, Page 1 of 90
SECTION A 20 MARKS (10 MULTIPLE CHOICE QUESTIONS, 2 marks each)
Please answer this section on the mark-reading sheet that you received (not in your answer book).
Choose one option for every question.
QUESTION 1
Suppose the following declarations appear in a C++ program:
float amount, forWaiter;
char service;
If the following function header is given:
float tip(float amountP, char serviceP)
which of the options below is a correct calling statement of the function tip?
1. forWaiter = tip(float amount, char service);
2. tip(amountP, serviceP);
za
3. forWaiter = tip(123.66, 'A');
4. forWaiter = tip(amountP, serviceP);
ls s
o.
5. None of the above options is a correct calling statement.
ria al
.c
to ori
QUESTION 2
rtu ut
Suppose the following declarations appear in a C++ program:
.g T
float afford, amount;
w R
int number;
string name;
G
If the following function header is given:
void supplyInfo(float affordP, int nrP, string & nameP, float & amountP)
w
which of the options below is a correct calling statement of the function supplyInfo?
w
1. supplyInfo(800, 4, "Beach Hotel", 789);
2. supplyInfo(800, 4, name, amount);
3. supplyInfo(affordP, nrP, nameP, amountP);
4. supplyInfo(afford, number, "Beach Hotel", 789);
5. None of the above options is a correct calling statement.
Tel: 0127704001/0127704239
web: www.grtutorials.co.za email: accounts@grtutorials.co.za cell: 0710354903
, Page 2 of 90
2 COS111U
May 2009
QUESTION 3
Suppose the following declarations appear in a C++ program:
int age, days;
char grade;
float salary;
Suppose the following calling statement appears in the program:
inputInfo(35, 'B', salary, days);
Which of the options below is a correct function header of the function inputInfo?
1. void inputInfo(int ageP, char gradeP, float & salaryP, int & daysP)
2. void inputInfo(35, 'B', float salaryP, int daysP)
3. void inputInfo(int & age, char & grade, float & salary, int & days)
4. void inputInfo(35, 'B', salary, days)
za
5. All of the above options are correct function headers.
ls s
o.
ria al
Questions 4 and 5 are based on the following C++ program.
.c
to ori
#include <iostream>
rtu ut
#include <string>
using namespace std;
.g T
int main( )
w R
{
G
string favour;
int tvHours, favourHours;
cout << "How many hours per week do you watch sport on TV, " << endl
<< "what is your favourite sport, how many hours for that? ";
cin >> tvHours >> favour >> favourHours;
w
w
if (tvHours > 10)
if (favour == "soccer")
{
if (favourHours > tvHours / 2)
cout << "Group A" << endl;
}
else
if (favourHours > tvHours / 4)
cout << "Group B" << endl;
else
cout << "Group C" << endl;
else
if (favour != "rugby")
cout << "Group D" << endl;
return 0;
[TURN OVER]
Tel: 0127704001/0127704239
web: www.grtutorials.co.za email: accounts@grtutorials.co.za cell: 0710354903
, Page 3 of 90
3 COS111U
May 2009
}
QUESTION 4
Suppose the program above is executed with the following input:
11 soccer 5
Which of the options below gives the output of the program?
1. Group A
2. Group B
3. Group C
4. Group D
5. No output
QUESTION 5
za
Suppose the following input is given to the program above:
ls s
o.
6 soccer 6
ria al
.c
to ori
Which of the options below gives the output of the program?
rtu ut
1. Group A
.g T
2. Group B
3. Group C
w R
4. Group D
5. No output
G
QUESTION 6
Suppose in a C++ program values are assigned to a string variable name and to a float variable amount.
w
Then a while loop is entered. The loop has to be executed as long as
w
• name is not equal to "NOBODY" and
• amount is not less than 10.00.
Which of the options below gives a correct condition for the loop?
1. ((name != "NOBODY") && (amount >= 10.00))
2. ((name != "NOBODY") || (amount >= 10.00))
3. (!(name == "NOBODY") && (amount < 10.00))
4. (!((name != "NOBODY") && (amount >= 10.00)))
5. None of the options above is a correct condition.
QUESTION 7
Suppose we want to assign the value true to a bool variable success if
• the value of the int variable grade is 10 or higher and
[TURN OVER]
Tel: 0127704001/0127704239
web: www.grtutorials.co.za email: accounts@grtutorials.co.za cell: 0710354903
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