General Utilities 2 Quiz Online Practice Test

1. The function `void free(void *ptr)` releases memory that was originally allocated by which of the following functions?

malloc, getenv, abort

calloc, malloc, exit

calloc, malloc, realloc

exit, getenv, abort

2. Which function does not return a value?

malloc()

realloc()

free()

calloc()

3. What do malloc(), realloc(), and calloc() return when memory allocation fails?

value

error

null pointer

no value

4. What does the function void *realloc(void *str, size-t size) do?

Allocates space for an array of str objects, each of size

Allocates space for an object with indeterminate value and specified size

Resizes the object pointed to by str to the specified size

Deallocates the space pointed to by str for future allocation

5. Which function leads to abnormal termination of a program?

exit()

abort()

atexit()

getenv()

6. Which statement is correct regarding the atexit() function?

atexit() cannot return to its caller

atexit() returns zero if registration succeeds, nonzero if it fails

atexit() returns no value

atexit() causes abnormal program termination

7. What happens if more than one call to the exit function is executed in a program?

The program terminates normally

The behaviour is undefined

The program restarts

The behaviour is consistent

8. Which function is used to search the environment list provided by the host system?

getenv()

system()

srand()

rand()

9. What does the system() function do with the string pointed to by the parameter in its implementation?

Executes the string as a command in the host environment

Passes the string to the command processor for execution

Returns an error if the string is invalid

Converts the string into an integer value

10. What is the result of executing the following C code?
int main(void) {
int rc;
rc = system("time");
exit(0);
}

produces error

no value is returned

returns the time

nothing can be determined

11. Which function from the options below is utilized for searching?

lsearch()

bsearch()

csearch()

qsearch()

12. What function does bsearch() repeatedly invoke to compare search elements with those in the array?

mblem()

wctomb()

compar()

labs()

13. Which function is used to sort an array of objects?

bsort()

hsort()

ssort()

qsort()

14. Select the accurate statement.

bsearch() returns no value to the function

getenv() returns no value to the function

qsort() returns no value to the function

realloc() returns no value to the function

15. Which statement correctly describes the relationship between abs() and labs()?

The abs() function is similar to the labs() function, but both the argument and the returned value are of type long int.

The abs() function is not similar to the labs() function; both the argument and returned value are of type long int.

The abs() function is similar to the labs() function, but both the argument and the returned value are of type short int.

The abs() function is not similar to the labs() function; both the argument and returned value are of type short int.

16. The abs() function computes the absolute value of __________.

a floating number

an integer number

a double number

All of these

17. Which function provides both the quotient and remainder from dividing the numerator by the denominator?

div()

div_t()

ldiv_t()

labs()

18. What members are included in the structure returned by the div() function?

int quot and int rem

float quot and float rem

double quot and double rem

no members are returned by div()

19. Which structure does the ldiv() function return?

div_t

ldiv_t

div_i

ldiv_i

20. Identify the multibyte character function that is included in the stdlib.h header file.

wctomb()

mblen()

mbtowc()

All of these

Test Name:	General Utilities 2 Quiz
Subject Category:	C Programming
Test Type:	Multiple Choice Questions
Total Score / Questions:	20 / 20
Time Allowed:	10 Min
Who Should Practice this Test:	Students, job seekers, or professionals preparing for competitive exams and interviews.

General Utilities 2 MCQ Quiz Online Practice Test