SC

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xos.h>
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>

using namespace std;

Display *dis;
int screen;
Window win;
GC gc;

void init_x();
void close_x();
void redraw();

int main(){

    init_x();

    double r,a;
            printf("Repeat: ");
            scanf("%d",&r);
            printf("Amount: ");
            scanf("%d",&a);

            for(double yi=0;yi<r;yi++){
                    yi=sin(yi);
                    yi=yi*a;
                    for(double xi=0;xi<r;xi++){
                            xi=sin(xi);
                            xi=xi*a;
                            XDrawPoint(dis,win,gc,xi,yi);
                    }
            }

            sleep(1);
            redraw();
            cin.get();
            sleep(1);
            close_x();
}

void init_x() {
/* get the colors black and white (see section for details) */
    unsigned long black,white;

    dis=XOpenDisplay((char *)0);
    screen=DefaultScreen(dis);
    black=BlackPixel(dis,screen),
    white=WhitePixel(dis, screen);
    printf("Windows Dimensions: ");
    int height, width;
    scanf("%d %d",&height,&width);
    printf("Window (white=0,black=1): ");
    setwin:
    int swin;
    scanf("%d",&swin);
    if(swin==0){
        win=XCreateSimpleWindow(dis,DefaultRootWindow(dis),0,0,height,width, 5,black, white);
    } else if(swin==1){
        win=XCreateSimpleWindow(dis,DefaultRootWindow(dis),0,0,height,width, 5,white, black);
    } else {
        printf("%d is not an option!",swin);
        goto setwin;
    }
    XSetStandardProperties(dis,win,"SC","Siegfried Keller",None,NULL,0,NULL);
    XSelectInput(dis, win, ExposureMask|ButtonPressMask|KeyPressMask);
        gc=XCreateGC(dis, win, 0,0);
    if(swin==0){
        XSetBackground(dis,gc,white);
        XSetForeground(dis,gc,black);
    } else {
        XSetBackground(dis,gc,black);
        XSetForeground(dis,gc,white);
    }
    XClearWindow(dis, win);
    XMapRaised(dis, win);
};

void close_x() {
    XFreeGC(dis, gc);
    XDestroyWindow(dis,win);
    XCloseDisplay(dis);
    exit(1);
};

void redraw() {
    XClearWindow(dis, win);
};