Command line arguments in C++ using argc and argv in Main Function
In C++ it is possible to accept command line arguments. Command-line arguments are given after the name of a program in command-line operating systems like DOS or Linux, and are passed in to the program from the operating system. To use command-line arguments in your program, you must first understand the full declaration of the main function, which previously has accepted no arguments. In fact, the main can actually accept two arguments: one argument is the number of command-line arguments, and the other argument is a full list of all of the command-line arguments.
int main(int argc, char argv[]) { / ... */ }
or
int main(int argc, char *argv) { / ... */ }
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