MCQ Exam Test

Q1

The . . . . . . . . macro shall be invoked before any access to the unnamed arguments.

A va_arg
B va_end
C va_list
D va_start

Q2

What will be the output of the following C code if the system time is 1:52 PM (Sunday)? #include<stdio.h> #include<time.h> int main() { struct tm *ptr; time_t t; char str[100]; t = time(NULL); ptr = localtime(&t); strftime(str,100,"%I",ptr); puts(str); return 0; }

A 13
B 1
C 1
D error

Q3

What are the contents of the register?

A sp, fp only
B sp only
C fp, pc only
D sp, fp, pc

Q4

Select the correct declaration of setjmp().

A int setjmp(jmp_buf environment)
B int setjmp(long_jmp environment)
C int setjmp(jmp_buf )
D int setjmp(long_jmp)

Q5

The macro definition of INT_MIN is . . . . . . . .

A #NAME?
B INT_MAX - 1
C #NAME?
D INT_MAX + 1

Q6

Which among the given function does not return a value?

A strtoul()
B strtol()
C rand()
D srand()

Q7

Which macro saves the current environment into the variable environment for later use by the function longjmp().

A setjmp
B longjmp
C jmp
D set_jmp

Q8

size_t is of . . . . . . . . type.

A signed integer
B signed character
C unsigned integer
D unsigned character

Q9

The header file setjmp.h is used to . . . . . . . .

A set location specific information
B control low-level calls and returns to and from functions
C handle signals reported during a program's execution
D manipulate strings (character arrays)

Q10

Correct code to turn assertions OFF at various places throughout a source file is . . . . . . . .

A #undef NDEBUG #include
B #define NDEBUG #include
C #define DEBUG #include
D #undef N-DEBUG #include

Q11

mblen() function returns 0,if a null wide character was recognized. It returns -1 if an invalid multi-byte sequence was encountered.

A TRUE
B FALSE

Q12

A function is declared as sqrt(-x) under the header file math.h, what will the function return?

A square root of x
B complex number
C domain error
D range error

Q13

The number of bytes contained in the multibyte character pointed to by a character is . . . . . . . .

A getenv()
B bsearch()
C mblen()
D qsort()

Q14

What will be the output of the following C code if the value of UCHAR_MAX is 127? #include<stdio.h> #include<limits.h> int main() { int d; d=CHAR_MAX; printf("%c",d); }

A Error
B 127
C Alphabet corresponding to the value 127
D Junk value

Q15

Which macro can be used to detect and report exceptional conditions?

A extern
B edom
C assert
D lbdl_min 1e-37

Q16

Which of the following is defined under the header file time.h?

A strnct()
B fabs()
C iscntrl()
D null

Q17

What will the code display on compiling? void funccall() { printf("this is funccall\n"); } void main () { atexit(funccall); printf("program starts\n"); printf("program ends\n"); }

A program starts this is funccall program ends
B this is funccall program starts program ends
C program starts program ends this is funccall
D error

Q18

void (signal(int sig, void (func)(int)))(int);If the value of func is SIG_IGN then . . . . . . . .

A the signal will be ignored
B default handling for that signal will occur
C The signal() function will fail to execute
D the signal will be ignored to execute

Q19

What is the role of the given C function? void va_end(va_list ap)

A allows a function with variable arguments which used the va_start macro to return
B retrieves the next argument in the parameter list
C initializes ap variable to be used with the va_arg and va_start macros
D returns the next additional argument as an expression

Q20

Name the function that breaks a floating-point number into a normalized fraction and an integral power of 2.

A exp()
B frexp()
C Idexp()
D modf()

Q21

Which of the following is the correct code?

A tanh(double x)
B tanh double x
C tanhdouble x
D tanhdoublex

Q22

double . . . . . . . . (double x, double y) computes the floating-point remainder of x/y.

A modf
B fmod
C ceil
D floor

Q23

Which statement is true regarding abs() and labs()?

A The abs() function is similar to the labs() function, except that the argument and the returned value each of them have type long int
B The abs() function is not similar to the labs() function, except that the argument and the returned value in both functions have type long int
C The abs() function is similar to the labs() function, except that the argument and the returned value each have type short int
D The abs() function is not similar to the labs() function, except that the argument and the returned value in both function have type short int

Q24

What is the function of the void realloc(void str, size-t size);?

A allocates space for an array of str objects, each of whose size is size
B allocates space for an object whose size is specified by size and whose value is indeterminate
C changes the size of the object pointed to by str to the size specified by size
D causes the space pointed to by str to be deallocated, that is, made available for further allocation

Q25

What will be the output of the following C code if the system date is 6/2/2017(Friday)? #include<stdio.h> #include<time.h> int main() { struct tm local, gm; time_t t; t=time(NULL); local=localtime(&t); printf("%d",local->tm_wday); return 0; }

A 6
B 5
C error
D 0

C Programming - Part 84

The . . . . . . . . macro shall be invoked before any access to the unnamed arguments.

What will be the output of the following C code if the system time is 1:52 PM (Sunday)? #include<stdio.h> #include<time.h> int main() { struct tm *ptr; time_t t; char str[100]; t = time(NULL); ptr = localtime(&t); strftime(str,100,"%I",ptr); puts(str); return 0; }

What are the contents of the register?

Select the correct declaration of setjmp().

The macro definition of INT_MIN is . . . . . . . .

Which among the given function does not return a value?

Which macro saves the current environment into the variable environment for later use by the function longjmp().

size_t is of . . . . . . . . type.

The header file setjmp.h is used to . . . . . . . .

Correct code to turn assertions OFF at various places throughout a source file is . . . . . . . .

mblen() function returns 0,if a null wide character was recognized. It returns -1 if an invalid multi-byte sequence was encountered.

A function is declared as sqrt(-x) under the header file math.h, what will the function return?

The number of bytes contained in the multibyte character pointed to by a character is . . . . . . . .

What will be the output of the following C code if the value of UCHAR_MAX is 127? #include<stdio.h> #include<limits.h> int main() { int d; d=CHAR_MAX; printf("%c",d); }

Which macro can be used to detect and report exceptional conditions?

Which of the following is defined under the header file time.h?

What will the code display on compiling? void funccall() { printf("this is funccall\n"); } void main () { atexit(funccall); printf("program starts\n"); printf("program ends\n"); }

void (signal(int sig, void (func)(int)))(int);If the value of func is SIG_IGN then . . . . . . . .

What is the role of the given C function? void va_end(va_list ap)

Name the function that breaks a floating-point number into a normalized fraction and an integral power of 2.

Which of the following is the correct code?

double . . . . . . . . (double x, double y) computes the floating-point remainder of x/y.

Which statement is true regarding abs() and labs()?

What is the function of the void realloc(void str, size-t size);?

What will be the output of the following C code if the system date is 6/2/2017(Friday)? #include<stdio.h> #include<time.h> int main() { struct tm local, gm; time_t t; t=time(NULL); local=localtime(&t); printf("%d",local->tm_wday); return 0; }

Report a problem

The . . . . . . . . macro shall be invoked before any access to the unnamed arguments.

What will be the output of the following C code if the system time is 1:52 PM (Sunday)? #include<stdio.h> #include<time.h> int main() { struct tm *ptr; time_t t; char str[100]; t = time(NULL); ptr = localtime(&t); strftime(str,100,"%I",ptr); puts(str); return 0; }

What are the contents of the register?

Select the correct declaration of setjmp().

The macro definition of INT_MIN is . . . . . . . .

Which among the given function does not return a value?

Which macro saves the current environment into the variable environment for later use by the function longjmp().

size_t is of . . . . . . . . type.

The header file setjmp.h is used to . . . . . . . .

Correct code to turn assertions OFF at various places throughout a source file is . . . . . . . .

mblen() function returns 0,if a null wide character was recognized. It returns -1 if an invalid multi-byte sequence was encountered.

A function is declared as sqrt(-x) under the header file math.h, what will the function return?

The number of bytes contained in the multibyte character pointed to by a character is . . . . . . . .

What will be the output of the following C code if the value of UCHAR_MAX is 127? #include<stdio.h> #include<limits.h> int main() { int d; d=CHAR_MAX; printf("%c",d); }

Which macro can be used to detect and report exceptional conditions?

Which of the following is defined under the header file time.h?

What will the code display on compiling? void funccall() { printf("this is funccall\n"); } void main () { atexit(funccall); printf("program starts\n"); printf("program ends\n"); }

void (*signal(int sig, void (*func)(int)))(int);If the value of func is SIG_IGN then . . . . . . . .

What is the role of the given C function? void va_end(va_list ap)

Name the function that breaks a floating-point number into a normalized fraction and an integral power of 2.

Which of the following is the correct code?

double . . . . . . . . (double x, double y) computes the floating-point remainder of x/y.

Which statement is true regarding abs() and labs()?

What is the function of the void *realloc(void *str, size-t size);?

What will be the output of the following C code if the system date is 6/2/2017(Friday)? #include<stdio.h> #include<time.h> int main() { struct tm *local, *gm; time_t t; t=time(NULL); local=localtime(&t); printf("%d",local->tm_wday); return 0; }

void (signal(int sig, void (func)(int)))(int);If the value of func is SIG_IGN then . . . . . . . .

What is the function of the void realloc(void str, size-t size);?

What will be the output of the following C code if the system date is 6/2/2017(Friday)? #include<stdio.h> #include<time.h> int main() { struct tm local, gm; time_t t; t=time(NULL); local=localtime(&t); printf("%d",local->tm_wday); return 0; }