Standard Library Functions - C Programming MCQ Questions and Answers Page-7 section-1

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61.

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

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62.
The C library function . . . . . . . . function converts the wide character to its multibyte representation.

A. mblen()

B. mbtowc()

C. wcstombs()

D. wctomb()

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63.
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

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64.

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

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65.
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)

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66.
A less common use of setjmp.h is to create syntax similar to . . . . . . . .

A. errno

B. variable arguments

C. coroutines

D. retval

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67.

What will be the output of the following C code?

double x=1.2
printf("%.1lf", ceil(x));

A. 1

B. 2

C. 1.0

D. 2.0

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68.
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()

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69.
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

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70.
Which function is called by macro assert to terminate the execution?

A. exit()

B. atexit()

C. abort()

D. no function called

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61.
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);`

Answer & Solution

62.
The C library function . . . . . . . . function converts the wide character to its multibyte representation.

Answer & Solution

63.
A domain error occurs if x is negative and y is not an integral value for the function pow(double x, double y).

Answer & Solution

64.
Which statement is correct work reference to endptr?

`double strtod(const char *nptr, char **endptr);`

Answer & Solution

65.
Which of the following is the correct syntax of the function strtoul()?

Answer & Solution

66.
A less common use of setjmp.h is to create syntax similar to . . . . . . . .

Answer & Solution

67.
What will be the output of the following C code?

`double x=1.2 printf("%.1lf", ceil(x));`

Answer & Solution

68.
Which of the given function differs from the statement'errno is not neccessarily set on conversion error'?

Answer & Solution

69.
The macro MB_LEN_MAX is used to find . . . . . . . .

Answer & Solution

70.
Which function is called by macro assert to terminate the execution?

Answer & Solution

Read More Section(Standard Library Functions)

Standard Library Functions - C Programming MCQ Questions and Answers

61. 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);

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

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

Answer & Solution

Read More Section(Standard Library Functions)

61.
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);`

62.
The C library function . . . . . . . . function converts the wide character to its multibyte representation.

63.
A domain error occurs if x is negative and y is not an integral value for the function pow(double x, double y).

64.
Which statement is correct work reference to endptr?

`double strtod(const char *nptr, char **endptr);`

65.
Which of the following is the correct syntax of the function strtoul()?

66.
A less common use of setjmp.h is to create syntax similar to . . . . . . . .

67.
What will be the output of the following C code?

`double x=1.2 printf("%.1lf", ceil(x));`

68.
Which of the given function differs from the statement'errno is not neccessarily set on conversion error'?

69.
The macro MB_LEN_MAX is used to find . . . . . . . .

70.
Which function is called by macro assert to terminate the execution?