命令行参数可用于其他功能吗？

Question

在C语言中，有什么方法可以使命令行参数可用于其他函数，而不必将其作为参数传递给函数？

Answer 1

Some compilers provides global _argc and _argv variables for that exact purpose. Or use platform-specific APIs, like GetCommandLine() and CommandLineToArgvW() on Windows.

Answer 2

As DaoWen has said, the command-line arguments are just data, available in main(). So if you don't want to pass a command-line argument as a parameter to another function but you want it available in other functions, you could strcpy()/strncpy() the string into a global string.