graph

#include <math.h>
#include <graphics.h>

const int WIDTH = getmaxwidth(), HEIGHT = getmaxheight();

void drawLine(int moveToX, int moveToY, int drawX, int drawY, int color, int textX, int textY, char *name)
{
    moveto(moveToX, moveToY);
    setcolor(color);
    lineto(drawX, drawY);
    outtextxy(textX, textY, name);
}

int main()
{
    double x, y;
    float xMin, xMax;

    printf("y = sin(x)\n");

    printf("Enter Xmin = ");
    scanf("%f", &xMin);
    printf("Enter Xmax = ");
    scanf("%f", &xMax);

    printf("Width = %d\t Height = %.d\n", WIDTH, HEIGHT);

    delay(1000);

    initwindow(WIDTH, HEIGHT);
    moveto(WIDTH / 2, HEIGHT / 2);

    drawLine(0, HEIGHT / 2, WIDTH, HEIGHT / 2, WHITE, WIDTH - 20, HEIGHT / 2 + 20, "X");
    drawLine(WIDTH / 2, 0, WIDTH / 2, HEIGHT, WHITE, WIDTH/2 + 20, 0 , "Y");
    line(WIDTH/2, 0, WIDTH/2 + 10, 20);
    line(WIDTH/2, 0, WIDTH/2 - 10, 20);

    line(WIDTH, HEIGHT/2, WIDTH-20, HEIGHT/2 - 10);
    line(WIDTH, HEIGHT/2, WIDTH-20, HEIGHT/2 + 10);

    for(x = xMin; x < xMax; x += 0.01)
    {
        y = -sin(x);
        setcolor(14);
        putpixel(WIDTH / 2 + (x * 50), HEIGHT / 2 + (y * 50), 2);
    }

    getch();
    closegraph();
    system("PAUSE");
    return 0;
}