Argument passing to C Main using Nios II IDE

I haven't done this myself, but in alt_main.c the arguments to main.c are passed.

024: /*
025:  * Standard arguments for main. By default, no arguments are passed to main.
026:  * However a device driver may choose to configure these arguments by calling
027:  * alt_set_args(). The expectation is that this facility will only be used by
028:  * the iclient/ihost utility.
029: */
030: 
031: int    alt_argc = 0;
032: char** alt_argv = {NULL};
033: char** alt_envp = {NULL};
...
116:   main (alt_argc, alt_argv, alt_envp);