COP 3223C Final Exam
All preprocessor commands begin with what symbol?
#
Match the preprocessor commands to their behavior #elif
#else and #if in one statement
Match the function term to the definition Function Return Type
The data type of the value the function returns
What function is used to open a file?
fopen()
Match the type of loop to the best definition nested loops
one or more loops inside any other while, for, or do...while loop
If you want to pass a single-dimension array as an argument in a function, you would have to declare a formal parameter in one of three ways. Match the definition to the appropriate code example. Formal parameters as an unsized array
void myFunction(int param[]);
When was C first implemented?
1972
Given the source code below, how many tokens make up the statement? printf("Hello COP 3223!");
5
Regarding basic data types in C, match the data type to its definition double
A double-precision floating point value
Match the error handling term to its behavior errno
A global variable that indicates an error occurred during any function call
Match the function term to the definition A function
A group of statements that together perform a task
The C preprocessor offers operators to help create macros. Match the operator to its behavior \
A macro is normally confined to a single line, however when multiple lines are required use this operator
Regarding basic data types in C, match the data type to its definition float
A single-precision floating point value
Match the operator to its functionality +
Adds two operands
Match the type of loop to the best definition for 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
Match the data type to its definition. Basic Types
Arithmetic types and are further classified into integer and floating-point types
Match the operator to its functionality ==
Checks if two operands are equal
Match the operator to its functionality *
Multiplies two operands
C programming language assumes any non-zero and non-null values as true
True
Match the parts of the program with its definition. ----------------------------------------------------------------- #include <stdio.h> int main() { /* my first program in C */ printf("Hello, World! \n"); return 0; } #include <stdio.h>
preprocessor command
What type of file contains the source code?
source files
Regarding keywords in the C programming language and creating identifiers. Keywords are reserved in all lowercase AND all uppercase.
False
Regarding whitespace in the C programming language, spaces are required between the operators in the following source code in order to compile, run, and provide the correct output. int sum=2+3/2-12*15;
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
False
Match the error handling term to its behavior stderr
File stream to output all the errors
Regarding file opening, one of the arguments that must be passed is the access mode. Match the access mode to its behavior r+
Opens a text file for both reading and writing only
Regarding file opening, one of the arguments that must be passed is the access mode. Match the access mode to its behavior w+
Opens a text file for both reading and writing; it first truncates the file to zero length if it exists, otherwise creates a file if it does not exist
Regarding file opening, one of the arguments that must be passed is the access mode. Match the access mode to its behavior a+
Opens a text file for both reading and writing; the reading will start from the beginning but the writing will only be appended
Regarding file opening, one of the arguments that must be passed is the access mode. Match the access mode to its behavior w
Opens a text file for writing
Regarding file opening, one of the arguments that must be passed is the access mode. Match the access mode to its behavior a
Opens a text file for writing in appending mode
Regarding file opening, one of the arguments that must be passed is the access mode. Match the access mode to its behavior r
Opens an existing text file for reading purposes
There are three places where variables can be declared in C programming language. Match the scope to the rule. global
Outside of all functions
Match the data type to its definition. Derived Types
Pointer, array, structure, union, function types
Match the preprocessor commands to their behavior #error
Prints error message on stderr
Match the function term to the definition A function definition
Provides the actual body of the function
The C Programming language has functions built in for file access. Match the function to its behavior fgetc()
Reads a character
The C Programming language has functions built in for file access. Match the function to its behavior fscanf()
Reads a formatted string
The C Programming language has functions built in for file access. Match the function to its behavior fgets()
Reads a string
Match the function term to the definition Parameter list
Refers to the type, order, and number of parameters in the function
Match the operator to its functionality %
Remainder after integer division
Match the type of loop to the best definition while loop
Repeats a statement or group of statements while a given condition is true, can execute 0...n times
Regarding basic data types in C, match the data type to its definition void
Represents the absence of type
Match the error handling term to its behavior sterror()
Returns a pointer to the textual representation of the current errno value
Match the operator to its functionality sizeof()
Returns the size of a variable
Match the preprocessor commands to their behavior #ifdef
Returns true if this macro is defined
Match the preprocessor commands to their behavior #ifndef
Returns true if this macro is not defined
Match the function term to the definition A function declaration
Tells the compiler about the functions name, return type, and parameters
Match the loop control statement to the best definition break
Terminates the loop or switch statement and transfers execution to the statement immediately following the loop or switch
Match the preprocessor commands to their behavior #if
Test if a compile time condition is true
Match the function term to the definition Function Name
The actual name of the function
Match the preprocessor commands to their behavior #else
The alternative for #if
The C Programming language includes predefined macros. They are available for use in programming however, the predefined macros should not be directly modified. Match the predefined macro to its behavior. __DATE__
The current date as a character literal in "MM DD YYYY" format
The C Programming language includes predefined macros. They are available for use in programming however, the predefined macros should not be directly modified. Match the predefined macro to its behavior. __TIME__
The current time as a character literal in ""HH:MM:SS" format
Regarding basic data types in C, match the data type to its definition int
The most natural size of an integer for a machine
The C Programming language includes predefined macros. They are available for use in programming however, the predefined macros should not be directly modified. Match the predefined macro to its behavior. __FILE__
This contains the current filename as a string literal
The C Programming language includes predefined macros. They are available for use in programming however, the predefined macros should not be directly modified. Match the predefined macro to its behavior. __LINE__
This contains the current line number as a decimal constant
Match the error handling term to its behavior void *malloc(int num);
This function allocates an array of num bytes and leave them uninitialized
Match the error handling term to its behavior void *calloc(int num, int size);
This function allocates an array of num elements of which size in bytes will be size
Match the error handling term to its behavior void *realloc(void *address, int newsize);
This function re-allocates memory extending it up to newsize
Match the error handling term to its behavior void free(void *address);
This function releases a block of memory specified by address
Match the storage class to its definition. register
To define local variables that should be stored in register instead of RAM
Match the storage class to its definition. extern
To give a reference of a global variable that is visible to ALL the program files
The keyword 'enum' is used to declare new enumeration types in C
True
The scandalous truth is that C has no arrays — that they are merely cleverly disguised pointers
True
The usual arithmetic conversions are not performed for the assignment operators, nor for the logical operators && and ||
True
To call a function, you simply need to pass the required parameters along with the function name
True
Type casting is a way to convert a variable from one data type to another data type
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
Regarding basic data types in C, match the data type to its definition char
Typically one byte and is an integer type
Match the preprocessor commands to their behavior #undef
Undefines a preprocessor macro
Match the preprocessor commands to their behavior #define
Used for constants to increase readability
Match the data type to its definition. Enumerated Types
Used to define variable that can only assign discrete integer values
Match the operator to its functionality !
Used to reverse the logical state of its operand
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?
Value of a is 30
Match the operator to its functionality &
bitwise AND
Regarding calling a function, arguments are used when _________ a function
calling
What is the global variable that indicates an error occurred during any function call defined in <error.h> header file?
errno
What function is used to close a file?
fclose()
What is source code compiled into?
machine language
What C operator is used to yield the storage size of the object or type in bytes?
sizeof()
Which of the following is an example of using the cast operator?
(type_name) expression
There are multiple formats of an acceptable comment in C, select all that apply.
-// comment -/* comment */
What tools are required to set up an environment in order to write, compile, and run a program written in the C language? Select all that apply
-C compiler -Text editor
Why is C widely used? Select all that apply
-Easy to learn -Structured language -It can be compiled on a variety of computer platforms -It can handle low-level activities
A variable definition must include as a minimum which of the following? Select all that apply. int variableName = 53;
-Semi-colon -Data type -Valid name
Which of the following is true regarding a variable in C? Select all that apply.
-has a specific type -the data type determines the set of operations that can be applied to the variable -the data type determines the range of values that can be stored -the data type determines the size of the variable -the data type determines the layout of the variable's memory
Which of the following is branching statement of C language?
-if statement -switch statement -if...else statement
int max(int num1, int num2); Given the function declaration above, which parts of the function comprise the function signature? Select all that apply.
-parameter int num2 -Function name max -parameter int num1
Which of the following is true regarding variable definition in C? Select all that apply.
-provides assurance to the compiler that there exists a variable with the given type and name -has its meaning at the time of compilation only -is useful when you are using multiple files
Which of the following are true regarding arrays. Select all that apply.
-sequential elements -fixed size -same data type
Regarding identifiers for variables, functions, or any other user-defined item, which of the following are acceptable? Select all that apply.
-variable -_variable -VARIABLE -var23iable
What does a storage class define regarding variables?
-visibility -scope -life-time
What is the file extension of a C language source code file?
.c
enum day {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}; Given the enumeration definition above, what is the value of Sunday?
0
enum day {sunday = 1, monday, tuesday = 5, wednesday, thursday = 10, friday, saturday}; Given the enumeration definition above, what is the value of saturday?
12
Which language is C the successor of?
B
Match the data type to its definition. Aggregate Types
Array and structure types
C runs nearly as fast as which other language?
Assembly language
Match the operator to its functionality =
Assigns values from the right side operand to the left side operand
Match the loop control statement to the best definition continue
Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating
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 ?=
Conditional expression; If condition is true ? then value X : otherwise value Y
Match the function term to the definition Function Body
Contains a collection of statements that define what the function does
The C preprocessor offers operators to help create macros. Match the operator to its behavior #
Converts a macro parameter into a string constant
Match the operator to its functionality --
Decrements integer by one
The C Programming language includes predefined macros. They are available for use in programming however, the predefined macros should not be directly modified. Match the predefined macro to its behavior. __STDC__
Defined as 1 when the compiler complies with the ANSI standard
Who developed the C programming language?
Dennis M. Ritchie
Match the error handling term to its behavior perror()
Displays the string you pass to it, followed by a colon, a space, and then the textual representation of the current erno value
Match the preprocessor commands to their behavior #endif
Ends a preprocessor conditional
Match the function term to the definition main()
Every C program has at least this one function
Match the operator to its functionality ||
If any of the two operands are non-zero, then the condition becomes true
There are three places where variables can be declared in C programming language. Match the scope to the rule. formal parameters
In the definition of function parameters
Match the preprocessor commands to their behavior #include
Inserts a particular header from another file
There are three places where variables can be declared in C programming language. Match the scope to the rule. local
Inside a function or block
Match the storage class to its definition. static
Instructs the compiler to keep a local variable in existence during the life-time of the program
Match the type of loop to the best definition do...while loop
Is guaranteed to execute at least one time
Match the storage class to its definition. auto
Is the default storage class for all local variables
Match the preprocessor commands to their behavior #pragma
Issues special commands to the compiler
Match the operator to its functionality /=
It divides the left operand by the right operand and assigns the value to the left operand
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
Match the operator to its functionality -=
It subtracts the right operand from the left operand and assigns the value to the left operand
If errno is the value of 0, what does it indicates regarding the status of the program?
No errors
Match the data type to its definition. Void
No value is available
Match the loop control statement to the best definition goto
Transfers control to the labeled statement
A preprocessor command must be the first nonblank character
True
A program can have same name for local and global variables but the value of local variable inside a function will take preference
True
A program stops its execution when break statement is encountered.
True
A specific element in an array is accessed by an index
True
All arrays consist of contiguous memory locations
True
All arrays have 0 as the index of their first element which is also called the base index
True
C programming does not provide direct support for error handling
True
C programming language assumes any zero or null values as false
True
Enumeration (or enum) is a user defined data type in C
True
In a C program, an individual statement must be ended with a semicolon.
True
It is considered good programming practice to use the cast operator whenever type conversions are necessary
True
The C Preprocessor is not a part of the compiler, but is a separate step in the compilation process
True
The C Programming language has functions built in for file access. Match the function to its behavior fputc()
Writes a character value
The C Programming language has functions built in for file access. Match the function to its behavior fprintf()
Writes a formatted string
The C Programming language has functions built in for file access. Match the function to its behavior fputs()
Writes a string
What punctuation is used to declare the explicit size of an array upon declaration when the array is not initialized during declaration?
[]
If an array is a three-dimensional array, how many sets of square brackets are used to identify each element of the array?
[][][]
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 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?
a is not less than 20
Match the parts of the program with its definition. ----------------------------------------------------------------- #include <stdio.h> int main() { /* my first program in C */ printf("Hello, World! \n"); return 0; } /* my first program in C */
comments
When calling a function, call by value refers to what behavior?
copies the actual value of an argument into the formal parameter of the function
Match the parts of the program with its definition. ----------------------------------------------------------------- #include <stdio.h> int main() { /* my first program in C */ printf("Hello, World! \n"); return 0; } printf("Hello, World! \n");
function available in C
Which of the following is the only methodology to return an array from a function in the C programming language?
int *myFunction()
Given the three situations the void type is used in C, match the associated code with the situation. Function arguments as void
int rand(void);
____________ is the built in multiway decision statement in C
switch
Match the parts of the program with its definition. ----------------------------------------------------------------- #include <stdio.h> int main() { /* my first program in C */ printf("Hello, World! \n"); return 0; } return 0;
terminates the main() function
Match the parts of the program with its definition. ----------------------------------------------------------------- #include <stdio.h> int main() { /* my first program in C */ printf("Hello, World! \n"); return 0; } int main()
the main function where the program execution begins
Given the three situations the void type is used in C, match the associated code with the situation. Pointers to void
void *malloc(size_t size);
Given the three situations the void type is used in C, match the associated code with the situation. Function returns as void
void exit(int status);
If you want to pass a single-dimension array as an argument in a function, you would have to declare a formal parameter in one of three ways. Match the definition to the appropriate code example. Formal parameters as a pointer
void myFunction(int *param);
If you want to pass a single-dimension array as an argument in a function, you would have to declare a formal parameter in one of three ways. Match the definition to the appropriate code example. Formal parameters as a sized array
void myFunction(int param[10]);
