cop3223 exam 2

A group of statements that together perform a task

A function

Every C program has at least this one function

main()

Tells the compiler about the functions name, return type, and parameters

A function declaration

Provides the actual body of the function

a function definition

The data type of the value the function returns

Function Return Type

The actual name of the function

Function Name

Refers to the type, order, and number of parameters in the function

Parameter list

Contains a collection of statements that define what the function does

Function Body

- parameter int num1
- parameter int num2
- Function name max

int max(int num1, int num2);

Given the function declaration above, which parts of the function comprise the function signature? Select all that apply.

True

To call a function, you simply need to pass the required parameters along with the function name

calling

Regarding calling a function, arguments are used when _________ a function.

copies the actual value of an argument into the formal parameter of the function

When calling a function, call by value refers to what behavior?

true

Enumeration (or enum) is a user defined data type in C.

true

The keyword 'enum' is used to declare new enumeration types in C

0

enum day {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday};

Given the enumeration definition above, what is the value of Sunday?

12

enum day {sunday = 1, monday, tuesday = 5, wednesday, thursday = 10, friday, saturday};

Given the enumeration definition above, what is the value of saturday?

false

Two enum names cannot have same value

false

enum state {working, failed};

enum result {failed, passed};

If the above enumerations are in the same scope, this source code would compile with no errors

Repeats a statement or group of statements while a given condition is true, can execute 0...n times

while loop

Allows you to efficiently write a loop that needs to execute a specific number of times; a valid implementation may only include two semicolons

for loop

Is guaranteed to execute at least one time

do...while loop

one or more loops inside any other while, for, or do...while loop

nested loops

Terminates the loop or switch statement and transfers execution to the statement immediately following the loop or switch

break

Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating

continue

Transfers control to the labeled statement

goto

true

All arrays consist of contiguous memory locations

true

A specific element in an array is accessed by an index

- sequential elements
- same data type
- fixed size

Which of the following are true regarding arrays. Select all that apply.

[]

What punctuation is used to declare the explicit size of an array upon declaration when the array is not initialized during declaration?

true

All arrays have 0 as the index of their first element which is also called the base index

[][][]

If an array is a three-dimensional array, how many sets of square brackets are used to identify each element of the array?

void myFunction(int param[10]);

Formal parameters as a sized array

void myFunction(int *param);

Formal parameters as a pointer

void myFunction(int param[]);

Formal parameters as an unsized array

int * myFunction()

Which of the following is the only methodology to return an array from a function in the C programming language?

true

The scandalous truth is that C has no arrays — that they are merely cleverly disguised pointers

true

A program can have same name for local and global variables but the value of local variable inside a function will take preference.

Inside a function or block

local

outside of all functions

global

in the definition of function parameters

formal parameters

true

The C Preprocessor is not a part of the compiler, but is a separate step in the compilation process

#

All preprocessor commands begin with what symbol?

true

A preprocessor command must be the first nonblank character.

Used for constants to increase readability

#define

inserts a particular header from another file

#include

undefines a preprocessor macro

#undef

Returns true if this macro is defined

#ifdef

tests if a compile time condition is true

#if

The alternative for #if

#else

#else and #if in one statement

#elif

ends preprocessor conditional

#endif

Prints error message on stderr

#error

Issues special commands to the compiler

#pragma

The current date as a character literal in "MMM DD YYYY" format

_DATE_

The current time as a character literal in "HH:MM:SS" format

_TIME_

This contains the current filename as a string literal

_FILE_

This contains the current line number as a decimal constant

_LINE_

defined as 1 when the compiler compiles with the ANSI standard

_STDC_

A macro is normally confined to a single line, however when multiple lines are required use this operator

The C preprocessor offers operators to help create macros. Match the operator to its behavior

\

Converts a macro parameter into a string constant

The C preprocessor offers operators to help create macros. Match the operator to its behavior

#

It permits two separate tokens in the macro definition to be joined into a single token

The C preprocessor offers operators to help create macros. Match the operator to its behavior

##

true

Type casting is a way to convert a variable from one data type to another data type

(type_name) expression

Which of the following is an example of using the cast operator?

true

It is considered good programming practice to use the cast operator whenever type conversions are necessary

true

void integerPromotion()
{int i = 17;char c = 'c';int sum;
sum = i + c;printf("Value of sum : %d\n", sum );}

Given the C data types and the concept of integer promotion, the above source code would compile and run without errors.

true

The usual arithmetic conversions are not performed for the assignment operators, nor for the logical operators && and ||

- visibility
- life time
- scope

What does a storage class define regarding variables?

is the default storage class for all local variables

Match the storage class to its definition

auto

To define local variables that should be stored in register instead of RAM

Match the storage class to its definition.

register

Instructs the compiler to keep a local variable in existence during the life-time of the program

Match the storage class to its definition.

static

To give a reference of a global variable that is visible to ALL the program files

Match the storage class to its definition.

extern

adds two operands

Match the operator to its functionality

+

Multiplies two operands

Match the operator to its functionality

*

remainder after integer division

Match the operator to its functionality

%

Decrements integer by one

Match the operator to its functionality

--

Checks if two operands are equal

Match the operator to its functionality

==

checks if left operand is greater than or equal to right operand

Match the operator to its functionality

>=

checks if two operands are not equal

Match the operator to its functionality

!=

used to reverse the logical state of its operand

Match the operator to its functionality

!

If any of the two operands are non-zero, then the condition becomes true

Match the operator to its functionality

||

Bitwise and

Match the operator to its functionality&

Assigns values from the right side operand to the left side operand

Match the operator to its functionality

=

It divides the left operand by the right operand and assigns the value to the left operand

Match the operator to its functionality

/=

returns the size of a variable

Match the operator to its functionality

sizeof()

Conditional expression; If condition is true ? then value X : otherwise value Y

Match the operator to its functionality

?=

It subtracts the right operand from the left operand and assigns the value to the left operand

Match the operator to its functionality

-=

true

C programming language assumes any non-zero and non-null values as true

true

C programming language assumes any zero or null values as false

a is less than 20

int a = 10;
if( a < 20 ){printf("a is less than 20\n" );}

Given the source code above, what would output to the command prompt or terminal as a result of the if condition?

a is not less than 20

int a = 30;
if( a < 20 )
{printf("a is less than 20\n" );}
else
{printf("a is not less than 20\n" );}

Given the source code above, what would output to the command prompt or terminal window?

Value of a is 30

int a = 30;
if( a == 10 ){printf("Value of a is 10\n" );}else if( a == 20 ){printf("Value of a is 20\n" );}else if( a == 30 ){printf("Value of a is 30\n" );}

Given the source code above, what would output to the command prompt or terminal window?

all of these

Which of the following is branching statement of C language?

switch

____________ is the built in multiway decision statement in C

false

A program stops its execution when break statement is encountered.