MCQ Exam Test

Q1

Which of the following is the correct syntax of the function strtoul()?

A unsigned long int strtoul(const char *n, char **ptr, int base)
B unsigned long int strtoul(const char *n, char **ptr)
C unsigned long int strtoul(const char *n)
D int strtoul(const char *n)

Q2

Which statement is correct work reference to endptr? double strtod(const char *nptr, char **endptr);

A A pointer to the starting string is stored in the object pointed to by endptr, provided that endptr is a null pointer
B A pointer to the ?nal string is stored in the object pointed to by endptr, provided that endptr is not a null pointer
C A pointer to the final string is stored in the object pointed to by endptr, provided that endptr is a null pointer
D A pointer to the starting string is stored in the object pointed to by endptr, provided that endptr is not a null pointer

Q3

A domain error occurs if x is negative and y is not an integral value for the function pow(double x, double y).

A TRUE
B FALSE

Q4

Which of the given function differs from the statement'errno is not neccessarily set on conversion error'?

A atof()
B atoi()
C atol()
D strtod()

Q5

Which of the given statement is not true with respect to void longjmp( jmp-buf env, int val)?

A The variable value cannot be zero
B env is the object containing information to restore the environment at the jmp_buf's calling point
C This function does not return any value
D This function restores the environment saved by the most recent call to setjmp() macro

Q6

atol(const char *str) Converts the string pointed to, by the argument str.

A to a long integer
B to a integer
C to a floating point number
D to a unsigned long integer

Q7

A less common use of setjmp.h is to create syntax similar to . . . . . . . .

A errno
B variable arguments
C coroutines
D retval

Q8

How many macros are defined in the header file stdarg.h?

A one
B two
C three
D four

Q9

What will be the output of the following C code? double log (double -x);

A returns natural logarithm of x
B range error
C domain error
D returns natural logarithm of -x

Q10

LC_COLLATE affects strcoll() and strxfrm() functions.

A TRUE
B FALSE

Q11

What will be the output of the following C code, if the system date is 6/24/2017? #include<stdio.h> #include<stdlib.h> #include<time.h> int main() { time_t ct; time(&ct); printf("%s\n",(&ct)); }

A Error
B Junk value
C 6
D June

Q12

What will be the output of the following C code? char str[20]; str= "123546"; res= atof(str); printf("String value = %s, Float value = %f\n", str, res);

A String value = 123546, Float value = 123546.0
B String value = 123546 , Float value = 123546.000000
C String value = 123546 , Float value = 0.000000
D String value = 123546 , Float value = 123546.000

Q13

What will be the output of the following C code? double x=1.8; printf("%.2lf",floor(x));

A 2
B 2
C 1
D 1

Q14

The macro which is used to find the maximum value of an unsigned integer is . . . . . . . .

A UNINT_MAX
B UNSINT_MAX
C UINT_MAX
D UNIT_MAX

Q15

What will be the output of the following C code? double x=1.2 printf("%.1lf", ceil(x));

A 1
B 2
C 1
D 2

Q16

void free(void *p) performs which of the following functions?

A returns pointer to allocated space for existing contents of p
B de-allocates space to which p points
C to abnormally terminate the program
D no such function defined in stdlib.h

Q17

The pointer used in the mblen() function points to the . . . . . . . .

A first byte of multibyte character
B last byte of multibyte character
C middle byte of multibyte character
D no pointer is used in mblen function

Q18

What will be the output of the following C code? (By date we mean: date, month and year) #include<stdio.h> #include<stdlib.h> #include<time.h> int main() { time_t ct; time(&ct); printf("%s\n",ctime(&ct)); }

A only current date
B only current date and current time
C current date, current time and the day of the week
D only current time

Q19

Which function is called by macro assert to terminate the execution?

A exit()
B atexit()
C abort()
D no function called

Q20

The C library function . . . . . . . . function converts the wide character to its multibyte representation.

A mblen()
B mbtowc()
C wcstombs()
D wctomb()

Q21

The function computes the hyperbolic cosine of x.

A cos(x)
B cosine(x)
C cosh(x)
D cosineh(x)

Q22

The macro offset expands to a constant of type . . . . . . . .

A size_t
B print_t
C ptrdiff_t
D null

Q23

Which of the following library functions is used to read location dependent information?

A localtime()
B localeconv()
C localcon()
D local()

Q24

The macro MB_LEN_MAX is used to find . . . . . . . .

A Maximum number of bytes in a multi-byte character
B Whether the given function is valid or not
C The maximum time taken for the execution of a particular function
D Maximum number of bits in a multi-byte character

Q25

Which of the following is not defined under the header file stddef.h?

A size_t
B ptrdiff_t
C exp_t
D null

C Programming - Part 83

Which of the following is the correct syntax of the function strtoul()?

Which statement is correct work reference to endptr? double strtod(const char *nptr, char **endptr);

A domain error occurs if x is negative and y is not an integral value for the function pow(double x, double y).

Which of the given function differs from the statement'errno is not neccessarily set on conversion error'?

Which of the given statement is not true with respect to void longjmp( jmp-buf env, int val)?

atol(const char *str) Converts the string pointed to, by the argument str.

A less common use of setjmp.h is to create syntax similar to . . . . . . . .

How many macros are defined in the header file stdarg.h?

What will be the output of the following C code? double log (double -x);

LC_COLLATE affects strcoll() and strxfrm() functions.

What will be the output of the following C code, if the system date is 6/24/2017? #include<stdio.h> #include<stdlib.h> #include<time.h> int main() { time_t ct; time(&ct); printf("%s\n",(&ct)); }

What will be the output of the following C code? char str[20]; str= "123546"; res= atof(str); printf("String value = %s, Float value = %f\n", str, res);

What will be the output of the following C code? double x=1.8; printf("%.2lf",floor(x));

The macro which is used to find the maximum value of an unsigned integer is . . . . . . . .

What will be the output of the following C code? double x=1.2 printf("%.1lf", ceil(x));

void free(void *p) performs which of the following functions?

The pointer used in the mblen() function points to the . . . . . . . .

What will be the output of the following C code? (By date we mean: date, month and year) #include<stdio.h> #include<stdlib.h> #include<time.h> int main() { time_t ct; time(&ct); printf("%s\n",ctime(&ct)); }

Which function is called by macro assert to terminate the execution?

The C library function . . . . . . . . function converts the wide character to its multibyte representation.

The function computes the hyperbolic cosine of x.

The macro offset expands to a constant of type . . . . . . . .

Which of the following library functions is used to read location dependent information?

The macro MB_LEN_MAX is used to find . . . . . . . .

Which of the following is not defined under the header file stddef.h?

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