Standard Library Functions MCQs

Question 1

Which of the given structure is returned by the function ldiv()?

Accepted Answer

ldiv_t

Answer

div_t

Answer

div_i

Answer

ldiv_i

Question 2

If NDEBUG is defined as a macro name, at the point where is included, then assert macro is defined as #define assert(ignore) ((void)0).

Accepted Answer

true

Answer

false

Question 3

Choose the right declaration of longjmp() function.

Accepted Answer

void longjmp(jmp_buf environment, int value)

Answer

void longjmp(setjmp environment, int value)

Answer

void longjmp(int value, jmp_buf environment)

Answer

void longjmp(int value, setjmp environment)

Question 4

Which of the given function converts the string pointed to, by the argument str to a floating-point number?

Accepted Answer

atof(const char *str)

Answer

strtod(const char *str, char **endptr)

Answer

atoi(const char *str)

Answer

atol(const char *str)

Question 5

What will the following C statement do? #include < setjmp.h > int setjmp(jmp_buf env);

Accepted Answer

save the current state of the registers into env

Answer

resets the registers to the values saved in env

Answer

provides a definition for env structure

Answer

accept variable(env) argument lists to be written

Question 6

Select the multibyte character function defined under the header file stdlib.h.

Accepted Answer

all of the mentioned

Answer

wctomb()

Answer

mblen()

Answer

mbtowc()

Question 7

When we use multiple alignas specifiers in the same declaration, the . . . . . . . . one is used.

Accepted Answer

strictest

Answer

first

Answer

last

Answer

middle

Question 8

The . . . . . . . . function sorts an array of objects.

Accepted Answer

qsort()

Answer

bsort()

Answer

hsort()

Answer

ssort()

Question 9

The system() function passes the string pointed to by string to the host environment to be executed by a command processor in an implementation-defined manner. int system(const char *string);

Accepted Answer

true

Answer

false