C MCQs for placement and exams - Set 8

C MCQs for placement and exams - Set 8

1.) The compiler will give an error if we attempt to get the address of a varaible with _________ stroage class.
a.) register keyword
b.) extern keyword
c.) static keyword
d.) auto keyword
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2.)Which of the following is not a stream that is opened by every c program?
a.) stdlog
b.) stdout
c.) stdin
d.) stderr
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3.) Which of the following best describe volatile keyword?
a.) Volatile keyword indicates that the variable is stored in volatile memory
b.) Volatile keyword indicates that the value of the variable cannot be determined at compile time
c.) Volatile keyword instruct the compiler not to do any optimization on that variable
d.) Volatile keyword indicates that it cannot be used with const keyword
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4.) Which of the following global variable is set when the log function (defines in ) fails?
a.) exceptionno
b.) errno
c.) log_error
d.) error
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5.) According to ANSI specifications which is the correct way of declaring main when it receives command-line arguments?
a.) int main(int argc, char *argv[])
b.) int main(argc, argv)
int argc;
char *argv;
c.) int main()
{
int argc;
char *argv;
}
d.) None of above
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6.) What do the 'c' and 'v' in argv stands for?
a.) 'c' means argument control 'v' means argument vector
b.) 'c' means argument count 'v' means argument vertex
c.) 'c' means argument count 'v' means argument vector
d.) 'c' means argument configuration 'v' means argument visibility
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7.) Which of the following is TRUE about argv?
a.) It is an array of character pointers
b.) It is a pointer to an array of character pointers
c.) It is an array of strings
d.) None of above
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8.) Which of the following statements are FALSE about the below code?

Int main (int ac, char *av[]) { }

a.) ac contains count of arguments supplied at command-line
b.) av[] contains addresses of arguments supplied at a command line
c.) In place of ac and av, argc and argv should be used
d.) The variables ac and av are always local to main()
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9.) Queue can be used to implement
a.) radix sort
b.) quick sort
c.) recursion
d.) depth first search
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10.) The depth of a complete binary tree is given by
a.) D_n = n log₂n
b.) D_n = n log₂n+1
c.) D_n = log₂n
d.) D_n = log₂n+1
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