What is the difference between begin() and rbegin()? - CPP Quiz

CPP - Quiz(MCQ)

What is the difference between begin() and rbegin()?

A)

begin() returns an iterator to the first element and rbegin() returns an iterator to an element kept at the end of the vector

B)

begin() returns an iterator to first element whereas rbegin() returns constant iterator to first element

C)

begin() returns returns first element rbegin() returns void

D)

both are the same

Correct Answer : begin() returns an iterator to the first element and rbegin() returns an iterator to an element kept at the end of the vector

Explanation : begin() is used to return the iterator to the first element of the vector whereas rbegin() is used to return the an element stored at in the last of a vector.

Recently Updated in CPP Questions

What is the signature of math in function using command line arguments?

A)

int main(int argc, char **argv);

B)

int main(int argc, char const **argv);

C)

int main(int argc, char const *argv[]);

D)

All of the above

Correct Answer : All of the above

Explanation : Any of the above signature can be used while using command line arguments in C++ programs

Which of the following gives the name of the program if the second parameter to the main fucntion is char **argv?

A)

argv[0]

B)

argv[1]

C)

argv[2]

D)

argv[3]

Correct Answer : argv[0]

Explanation : The first string in the list of command line arguments represents the name of the program which can be accessed by using argv[0].

What does the first parameter of the main function represent?

A)

List of command line arguments

B)

Stack of command line arguments

C)

Number of command line arguments

D)

Dictionary of command line arguments

Correct Answer : Number of command line arguments

Explanation : The first argument of the main() function represents the number of command line arguments that are passed.

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