C++实现可执行文件输入参数执行

• Overview about command line parameters

  Command-line parameters are passed to a program at runt-time by the OS when the program is requested by another program, such as a command interpreter ("shell") like cmd.exe on WIndows or bash on Linux and OS X.

  The user types a command and the shell calls the OS to run the program.

  The uses for command-line parameters are various, but the main two are:

  1. Modifying program behaviour - command-line parameters can be used to tell a program how you expect it to behave;
  2. Having a program run without user interaction - this is especially useful for programs that are called from scripts or other programs;

• The command-line

  Adding the ability to parse command-line parameters to a program is very easy. Every C and