C++ Program

Programs that have minimal and/or optional inputs, command line arguments offer a great way to make programs more modular.  Command line arguments  are optional string arguments that a user can give to a program upon execution. These arguments are passed by the operating system to the program, and the program can use them as input. For example  Let’s write a short program to print the value of all the command line parameters: #include <iostream> int main(int argc, char *argv[]) {     using namespace std;     cout << "There are " << argc << " arguments:" << endl;     // Loop through each argument and print its number and value     for (int nArg=0; nArg < argc; nArg++)         cout << nArg << " " << argv[nArg] << endl;     return 0; } Now, when we invoke this program with the command line arguments “Myfile.txt” and “100″, the...