#include <time.h>
#include <iostream>

using namespace std;

void wait ( double seconds )
{
clock_t endwait;
endwait = clock () + seconds * CLK_TCK ;
while (clock() < endwait) {}
}

int main()
{

double t;
double delt;
double delf;
double function;

cout<< "Derivative of the function : "<<endl;
cin>>delf ;
cout<< "Time deviation : "<<endl;
cin>>delt;

t=0.0;
function=0.0;

do {

function = function+ delf*delt ;

// here i want to add joystick reading here
// joy1= ....???
//joy2= .....???
// like : when i move left,it reads 5 for joy1, and when i move right it reads 3 for joy2, etc...
// moreover,it eould be superb if also i can read the value as how much i move joystick,
//for example, when i move it from center to left end,joy1 value increases from 0 to 8.
// PLEASE HELP //

wait (delt);
t=t+delt;
cout<<" Function is "<<function<<endl;
// modifed function with joystick input :
//function=

} while (t <= 40);
return 0;
}