[Question] Digital inputs

[ChrisCrashX]

I have been trying to make a bot to put basic inputs into a Gamecube, without for the need of a Gamecube controller. Basically I want to assign my Arduino a set of buttons to press and depress, but I just can't figure out how. I have tried a bunch of different things with no success. Is there any way you could lead me in the right direction?

Here is what I have so far:
#include "Nintendo.h"

const byte pin = 8;
CGamecubeConsole GamecubeConsole(pin);
Gamecube_Data_t d = defaultGamecubeData;

void setup()
{

}

void loop()
{
int A = 0;
int B = 0;
int X = 0;
int Y = 0;
int Start = 0;
int Up = 0;
int Down = 0;
int Left = 0;
int Right = 0;
int Z = 0;
int R = 0;
int L = 0;

//reports data
d.report.a = A;
d.report.b = B;
d.report.x = X;
d.report.y = Y;
d.report.z = Z;
d.report.start = Start;
d.report.r = R;
d.report.l = L;
d.report.dup = Up;
d.report.dright = Right;
d.report.ddown = Down;
d.report.dleft = Left;

//sends the complied data to console when console polls for the input
GamecubeConsole.write(d);
}