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COP 3363 EXAM 2 QUESTIONS WITH LATEST UPDATE
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COP 3363 EXAM 2 QUESTIONS WITH LATEST UPDATE
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COP 3363 EXAM 2 QUESTIONS WITHLATEST UPDATE
cctype library - Answer-A useful C library of character handling functions
Ex: toupper(), tolower()
Understand the boolean functions whose names start with is, for determining if a
character fits in a certain given category
Array Properties - Answer-indexed collection of data elements of same type
consecutive storage locations
default indexing is 0 through size-1 (where size is the number of elements in the array)
Declaring Arrays - Answer-format: typeName variableName[size];
Ex: int list[10]
The type can be any basic type or any user-defined type
the size must be known by the compiler, so it must be a positive integer literal or
constant.
2-dimensional arrays - Answer-Ex: double table[5][10]
Initializing Arrays - Answer-Can initialize arrays in the same line as declaration
Format: type name[size] = { list of elements };
Ex: int list[5] = {1, 3, 5, 9, 10};
The list of elements goes in { } and is separated by commas
may leave size box empty when initializing on the declaration line - compiler sets size.
Can also initialize with for loops (good with regular patterns)
Initializing Arrays (Special case) - Answer-strings: null-terminated character arrays
can initialize on the declaration with a string literal
Ex: char name[7] = "Marvin";
size must leave room for null-character '\0'
, Using Arrays - Answer-valid indices are 0 through size-1.
may use any of these index numbers to access a single array element:
may use any positive integer r-value to index arrays (i.e. variables, expressions, etc)
it is the programmer's job to check for out-of-bounds index!
Copying Arrays - Answer-Assignment between array names does not copy one array to
another
If you want to copy one array to another, do it element by element (easy with a loop)
Using c-strings - Answer-A c-string can be used like a normal array (of characters)
cout and cin objects also work with c-strings (for output and input of words)
>> operator for input stops at white space (space, tab, newline, etc.)
only good for one word at a time
get and getline for reading strings from input
get, getline read up to specified delimiter -- can read entire sentences
Arrays as function parameters - Answer-Know how to pass an array into a function
Usually a good idea to pass in a size as well
Function always has access to the array contents -- only the address is sent in
-There's no pass-by-value vs. pass-by-reference with arrays
Use const on the array parameter when the function shouldn't change the array
Array Usage and Algorithms - Answer-Understand how to handle arrays that are
declared to a certain size, but are not always "full" to their capacity
Understand common array algorithms and patterns, including (but not limited to):
-iterating through an array elements with a loop
-Printing array contents
-adding or counting array elements
-finding largest/smallest element of an array
-initializing array contents, with either formulas, user entry, or initializer list
-Using parallel arrays
-Swapping or moving around array elements
<cstring> library functions: - Answer-strlen
strcpy
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