17. Command-line arguments

A program gains access to its command-line arguments as follows:

#include <iostream>
using namespace std;

int main( int argc, char* argv[] )
{
    int idx;
    for ( idx = 1; i < argc; ++idx ) {
        cout << argv[ idx ] << '\n';
    }
    return 0;
}

Note that the loop begins at index 1, thus skipping the name of the program.

argc is the argument counter

argv[ ] is the array of pointers to strings

If command line was

    C:\>prog Hello World

then argc is set to 3, and argv is organized like this: