What is the use of emplace() function in C++?

CPP - Quiz(MCQ)

Used to check the type of any variable

Used to change the object any container is holding

Used to empty any container value

Used to add more item to the any list

Correct Answer : Used to change the object any container is holding

Explanation : emplace() function is used to change the object contained in any container i.e destroying the present object and creating the new object for the value given by the user.

Recently Updated in CPP Questions

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

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

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

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

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?

argv[0]

argv[1]

argv[2]

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?

List of command line arguments

Stack of command line arguments

Number of command line arguments

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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