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Section 2.6 Summary & Reading Questions
All variables must be declared before use in C++.
C++ has typical built-in numeric types:
int is for integers and
float and
double are used for floating point depending on the number of digits desired.
C++ has the Boolean type
bool that holds
true or
false.
The character data type
char holds a single character which is encased in single quotes.
Pointers are a type of variable that stores a memory address. To declare a pointer, an
* is used before the variable name that is supposed to store the location.
Reading Questions Reading Questions
1.
If I want to use the
char type in C++, what set of symbols must be used?
Good job!
No, double quotes are only used for string.
No. Only one set of symbols may be used.
It depends upon the implementation.
No. The implementation is consistent.
One of the above is indeed correct.
2. 3.
How may one reference a variable’s memory address in C++?
Right! ``&`` is the "address-of" operator, used to reference an address.
No. ``int *p;`` defines a pointer to an integer, and ``*p`` would dereference that pointer, i.e. retrieve the data that p points to.
No. This is used in Python.
It depends upon the implementation.
No. Try again.
One of the above is indeed correct.
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