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Question 11 pts Fill in the blank. Two functions are defined main.c and MyAge.c   // FILE...

Question 11 pts

Fill in the blank. Two functions are defined main.c and MyAge.c  

// FILE main.c

main ( )

{

_______ int age ;

printf ( " the value of age is %d \n", age ) ;

}

// FILE MyAge.c

int age = 10;

int MyAge ( )

{

}

Group of answer choices

static

external

internal

extern

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Question 21 pts

Fill in the blank. Two functions are defined main.c and MyAge.c  

The below program will result in compilation error

// FILE main.c

main ( )

{

extern int age ;

printf ( " the value of age is %d \n", age ) ;

}

// FILE MyAge.c

int MyAge ( )

{

int age = 10 ; // local variable

}

Group of answer choices

True

False

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Question 31 pts

When you want memory allocated dynamically, you can call function

Group of answer choices

allocate ( )

malloc ( )

memAlloc ( )

GetMemory ( )

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Question 41 pts

malloc returns  

Group of answer choices

int *

char *

void *

float

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Question 51 pts

I need to assign int pointer to the pointer returned by malloc .

fill in the blank

int * ptr = _______ malloc ( 12 ) ;

Group of answer choices

( int )

( char * )

( int * )

( void * )

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Question 61 pts

pretend there is a structure  

struct _profile *ptr

is defined elsewhere. I want to allocate memory sufficient enough for one  structure.

fill in the blank

struct _profile *ptr = (struct _profile * ) malloc ( _________  )

Group of answer choices

1

(sizeof) (struct _profile )

sizeof (struct _profile )

sizeof (int)

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Question 71 pts

pretend there is a structure  

struct _profile *ptr

is defined elsewhere. I want to allocate memory sufficient enough for five structures.

fill in the blank

struct _profile *ptr = (struct _profile * ) malloc ( _________  )

Group of answer choices

5 * sizeof ( struct _profile )

sizeof ( struct _profile )

5

5 * sizeof ( ptr )

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Question 81 pts

what is the command to print all environment variables ?

Group of answer choices

showenv

environ

env

environment

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Question 91 pts

argc and argv related

I am issuing a command

./a.out 3 6 8 9

What is the value of argc ?

Group of answer choices

3

4

5

6

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Question 101 pts

argc and argv related

I am issuing a command

./a.out 3 6 8 9

What is the value of argv [ 0 ] ?

Group of answer choices

3

6

8

./a.out

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Question 111 pts

malloc

char * ptr = ______ malloc ( 8 ) ;

Group of answer choices

( char * )

char *

int *

(int * )

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Question 121 pts

I want to allocate 10 bytes.

short *ptr = ( short * ) malloc ( 5 * sizeof ( ____ ) ) ;

Group of answer choices

char

short

int

float

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Question 131 pts

int *ptr = (int *) malloc ( 12 ) ;

When I want to release the dynamic memory pointed to by *ptr, I want to release it by this function

Group of answer choices

release ( ptr )

free ( *ptr )

free ( ptr )

givingUp ( *ptr )

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Question 141 pts

char *ptr = (char*) malloc ( 12 ) ;

When I want to release the dynamic memory pointed to by *ptr, I want to release it by this function

Group of answer choices

free ( ptr ) ;

free ( * ptr ) ;

free ( ) ;

release ( ptr )

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Homework Answers

Answer #1

Question 11 pts

Fill in the blank. Two functions are defined main.c and MyAge.c
ANSWER: extern

// FILE main.c
main ( )
{
_______ int age ;
printf ( " the value of age is %d \n", age ) ;
}

// FILE MyAge.c
int age = 10;
int MyAge ( )
{
}

Group of answer choices
static
external
internal
extern<===================ANSWER

*****************************************************************************
Question 21 pts

Fill in the blank. Two functions are defined main.c and MyAge.c
The below program will result in compilation error

Answer: TRUE

// FILE main.c
main ( )
{

extern int age ;
printf ( " the value of age is %d \n", age ) ;
}

// FILE MyAge.c

int MyAge ( )
{
int age = 10 ; // local variable
}

Group of answer choices
True <===================ANSWER
False

*****************************************************************************
Question 31 pts

When you want memory allocated dynamically, you can call function
ANSWER: malloc()

Group of answer choices

allocate ( )
malloc ( ) <========================ANSWER
memAlloc ( )
GetMemory ( )
*****************************************************************************
Question 41 pts

malloc returns
ANSWER : void*
Group of answer choices

int *
char *
void * <=====================ANSWER
float
*****************************************************************************
I need to assign int pointer to the pointer returned by malloc .

fill in the blank

ANSWER: (int *)


int * ptr = _______ malloc ( 12 ) ;
Group of answer choices
( int )
( char * )
( int * ) <===================ANSWER
( void * )
*****************************************************************************
pretend there is a structure

struct _profile *ptr
is defined elsewhere. I want to allocate memory sufficient enough for one structure.
fill in the blank
ANSWER: sizeof (struct _profile )
struct _profile *ptr = (struct _profile * ) malloc ( _________ )

Group of answer choices

1
(sizeof) (struct _profile )
sizeof (struct _profile ) <======================ANSWER
sizeof (int)

*****************************************************************************
pretend there is a structure

struct _profile *ptr

is defined elsewhere. I want to allocate memory sufficient enough for five structures.

fill in the blank
ANSWER: 5 * sizeof ( struct _profile )
struct _profile *ptr = (struct _profile * ) malloc ( _________ )

Group of answer choices
5 * sizeof ( struct _profile ) <===============================ANSWER
sizeof ( struct _profile )
5
5 * sizeof ( ptr )
*****************************************************************************
what is the command to print all environment variables ?
ANSWER : env
Group of answer choices

showenv
environ
env <====================ANSWER
environment
*****************************************************************************
Question 91 pts

argc and argv related
I am issuing a command
./a.out 3 6 8 9
What is the value of argc ?
ANSWER: 5 (program name is also counted as argument)
Group of answer choices

3
4
5 <==================ANSWER
6
*****************************************************************************
argc and argv related

I am issuing a command

./a.out 3 6 8 9

What is the value of argv [ 0 ] ?
ANSWER: ./a.out

Group of answer choices

3
6
8
./a.out <=============ANSWER
*****************************************************************************
malloc

char * ptr = ______ malloc ( 8 ) ;
ANSWER: (char *)
Group of answer choices

( char * )<=============ANSWER
char *
int *
(int * )
*****************************************************************************
I want to allocate 10 bytes.

short *ptr = ( short * ) malloc ( 5 * sizeof ( ____ ) ) ;
ANSWER: short
Group of answer choices
char
short <====================ANSWER
int
float
*****************************************************************************
int *ptr = (int *) malloc ( 12 ) ;

When I want to release the dynamic memory pointed to by *ptr, I want to release it by this function
ANSWER: free ( ptr )
Group of answer choices

release ( ptr )
free ( *ptr )
free ( ptr ) <==================ANSWER
givingUp ( *ptr )
*****************************************************************************
char *ptr = (char*) malloc ( 12 ) ;

When I want to release the dynamic memory pointed to by *ptr, I want to release it by this function
ANSWER: free ( ptr ) ;
Group of answer choices
free ( ptr ) ; <======================ANSWER
free ( * ptr ) ;
free ( ) ;
release ( ptr )

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