Correct Answer : whole program
Explanation : We are defining the user-defined data type to be availed only inside that program, if we want to use anywhere means we have to define those types in the header file.
Correct Answer : All of the above
Explanation : Any of the above signature can be used while using command line arguments in C++ programs
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].
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.