YET ANOTHER MIXED BAG OF QUESTIONS

Home

George Boole was a 19th century mathematician... self-educated...
began teaching at age 16... became a professor at Queen's College in York...

Sentinel's value is best declared as a ----- Why? const int sentinel = -1; // so it won't change

while (score != sentinel) { the loop }
Specify which kind of parameter to make a function use (but not update) the value of a variable? Value.

 
sqrt: What forms can the argument supplied to a sqrt take? Variable or constant, or even an expression.

 
Stream extraction operator looks like this ----- and "says" ----- <<; "extract the next value from the stream named cin and assign it to the next-named variable."

 
string& is read (spoken) as ----- string reference.

 
Structs collect like values; arrays collect unlike values. Agree? Better not agree. It's the exact opposite.

 
Swap: How to swap 2 strings? void swap (string& s1, string& s2)

{ string temp; // to swap ints, rewrite as int temp

   temp = s1;

   s1 = s2;

   s2 = temp; }

 
T/F? ! is executed before *. T.

 
T/F? Declarations go at the top of the program.

T/F? Definition headers have semicolons.

T/F? Declarations don’t have semicolons.

 T.

F.

F.

 
T/F? Rows are horizontal; columns are vertical. T.

 
T/F? To make an array pass by reference, all you have to do is add the &. F. Arrays are automatically reference parameters, even without the &.

 
T/F? You can't later assign or reassign values to const var_name& T. It's protected from change by const, despite the &.

 
The keyword for the end of line manipulator: endl

 
The stream insertion operator looks like this ----- and "says" ----- <<; "insert the value that follows into the stream named cout."

 
There are 2 ways to change a variable in a statement that calls a function. What are they? Use a reference parameter; use a value-returning function with an assignment statement, eg. b = find_this(x, y)

 
To ----- is to tell the compiler what datatype (or type of parameter) this variable is.

To ----- is to cause the compiler to set aside memory at compile time.

 declare;

define.

 

 
To implement a decision step, use -----

to implement a conditional loop, use -----

 if;

while.

 
Value parameters: When the value of a value parameter is changed, you're not changing the argument. You're only changing a copy of it. T/F?  T. Because a value parameter has its own memory cell which receives a copy of the value of the matched argument.

 

 
Value-returning functions should only be used when their sole purpose is to ----- calculate and return a single value. No values should be read in or printed out in their bodies.

 
Void: The call to a void function is a complete statement. T/F? T. By contrast, the call to a value-returning function is part of an expression in an assignment or output statement.

 
Void: Will a void main compile? Yes - void main( ).

 
What datatype is like a record in a database? struct (it contains collections of different values).

 
Which stream transmits from the program to the monitor? ostream. (and the istream transmits from keyboard to program.)

 
while (Boolean expression) # {statement;} #

What replaces the # signs?

 Nothing, then nothing.

 

 
Why are arrays only passed by reference? It would waste time and memory to copy big arrays when only some cells are to be changed.

 
Why does & not contradict/counteract const? (It doesn’t, but how to explain this??)

 
You'll get an error message if you don’t return a value of the datatype specified. True? True. But remember that unspecified is taken as int.

 

*George Boole also developed the foundations for a formal calculus.
But you knew that, didn't you? -- talk about clever!

Home |

setstats 1