Chapter 6 C++ – Flashcards
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A(n) ________ argument is passed to a parameter when the actual argument is left out of the function call.
answer
default
question
A function ________ eliminates the need to place a function definition before all calls to the function.
answer
prototype
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This is a statement that causes a function to execute.
answer
function call
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EXIT_FAILURE and ________ are named constants that may be used to indicate success or failure when the exit( ) function is called.
answer
EXIT_SUCCESS
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What is the output of the following program?
#include
using namespace std;
int getValue (int);
int main()
{
int x= 2;
cout<< getValue (x)<< endl;
return 0;
}
int getValue (int num)
{
return num +5;
}
answer
7
question
In a function header, you must furnish:
1) data types of the parameters
2) the name of function
3) names of parameter variables
4) data type of the return value
5) all of these
answer
all of these
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A(n) ________ is information that is passed to a function, and a(n) ________ is information that is received by a function.
answer
argument, parameter
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What is the output of the following program?
#include
using namespace std;
void showDub(int);
int main ()
{
int x=2;
showDub (x);
cout <
answer
4
2
question
Look at the following function prototype.
int myFunction (double);
What is the data type of the functions parameter variable?
answer
double
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Which line in the following program contains a call to the showDub function?
1 #include
2 using namespace std;
3
4 void showDub(int);
5
6 int main ()
7 {
8 int x =2;
9
10 showDub (x);
11 cout <
answer
10
question
A function is executed when it is:
answer
called
question
Look at the following function prototype.
int myFunction (double, double, double);
How many parameter variables does this function have?
answer
3
question
These types of arguments are passed to parameters automatically if no argument is provided in the function call.
answer
default
question
What is the output of the following program?
#include
using namespace std;
void doSomething (int);
int main()
{
int x =2;
cout <
answer
2
0
2
question
Given the following function definition
coid calc (int a, in& b)
{
int c;
c = a + 2;
a = a * 3;
b = c + a;
}
What is the output of the following code fragment that invokes calc?
(all variables are of types int)
x=1;
y =2;
z=3;
calc (x,y);
cout << x<< " " << y << " " << z << endl;
answer
1 6 3
question
A ________ variable is declared outside all functions.
answer
global
question
What is the output of the following program?
#include
using namespace std;
void doSomething (int&);
int main ( )
{
int x = 2;
cout <
answer
2
0
0
question
If a function is called more than once in a program, the values stored in the function's local variables do not ________ between function calls.
answer
persist
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________ functions may have the same name, as long as their parameter lists are different.
answer
Two or more
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If a function does not have a prototype, default arguments may be specified in the function ________.
answer
header
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Which of the following statements about global variables is true?
answer
A global variable can have the same name as a variable that is declared locally within a function.
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The value in a(n) ________ variable persists between function calls.
answer
static local
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It is a good programming practice to ________ your functions by writing comments that describe what they do.
answer
document
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A function can have zero to many parameters, and it can return this many values.
answer
only one
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This function causes a program to terminate, regardless of which function or control mechanism is executing.
answer
exit( )
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A function ________ contains the statements that make up the function.
answer
definition
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