0

please somebody run this program

i have problem with #include <graphics.h>

```
#include <stdio.h>
#include <math.h>
#include <graphics.h>
#include <conio.h>
Void DrawFunction (int Npoint, double data[], double H) ;/* Display results */
Void MakePotential (int Npoint, double x0, double dx, double V0, double v[], double vd[]) ; /*potential*/
Void MakePacket (int Npoint, double x0, double dx, double k0, double *norm1, double yr[], double yi[]) ; /*make wavepacket*/
Void TimeIntegral (int Npoint, double dx2, double dt, double *norm2, double yr[], double yi[], double yd[], double v[], double a[], double b[]);
double a[4] = {0.0, 0.5, 0.5, 1.0};
double b[4] = {1/6.0, 1/3.0, 1/3.0, 1/6.0};
double yr[401],yi[401],yd[401],v[401],vd[401];
double kr[401],ki[401],dyr[401],dyi[401],ykr[401],yki[401];
void main(void)
{
int t, I, itest, Nmax;
double V0, x0, x, dx, dx2, dt, k0, E, norm1, norm2;
int graphriver = DETECT, graphmode;
initgraph( &graphriver, &graphmode , “ “);
setviewport(200, 50, 600, 350, 1);
rectangle(0,0,400,300);
dx = 0.02;
Nmax = 400;
dx2 = dx*dx;
dt = dx2/2.0;
x0 = 0.0;
V0 = 400.0;
MakePotential (Nmax, x0, dx, V0, v, vd);
DrawFunction (Nmax, vd, 0);
Gotoxy(1,1);
printf(“Input wave number (k0<25) ! “);
scanf(“%1f”, &k0); E=k0*ko;
printf(“ Time Norm”);
norm 1=0;
MakePacket(Nmax, x0, dx, k0, &norm1, yr, yi);
norm2=norm1;
for( t=0; t<=600; t++)
{ gotoxy(1,3); printf(“%5d %8.41f”,t, norm2/norm1); printf(“%d \n”,t);
TimeIntegral (Nmax, dx2,dt, %norm2, yr,yi,yd,v,a,b);
itest=fmod(t,10);
if (itest==0) { clearviewport();
rectangle(0,0,400,300);
setcolor(4); DrawFunction (Nmax,yr,E/V0);
setcolor(1); DrawFunction (Nmax,yr,E/V0);
setcolor(7); DrawFunction (Nmax,yr,E/V0);
DrawFunction (Nmax,vd,0); }
}
printf(“ Calculation ends,if ready, please return key!”);
getche();
closegraph();
} /* -- End of main function -- */
void DrawFunction(int Npoint,double data[], double H)
{ int n, iy +
moveto(0,250-(data[0]+H)*100);
for( n=0; n<=Npoint-1; n++)
{ iy=250-(data[n]+H*100; lineto(n, iy);
}
}
void MakePotential (int Npoint,double x0, double dx, double V0,double v[], double vd[])
{ int n;
double x;
x=x0 ;
for ( n=0; n<=Npoint-1; n++ )
{ if (n<220) vd[n]=0 ;else if (n>230) vd[n]=0;
else vd[n]=1.0;
v[n]=V0*vd[n]; x+=dx; }
}
void MakePacket (int Npoint,double x0, double dx, double k0, double *norm1, double yr[], double yi[])
{ int n;
double x;
x=x0 ;
for ( n=0; n<=Npoint-1; n++ )
{ yr[n]= cos(k0*x}*exp(-(x-2.5)*(x-2.5)*3.0) ;
yi[n]= sin(k0*x}*exp(-(x-2.5)*(x-2.5)*3.0) ;
x+=dx;
*norm1=norm1+yr[n]*yr[n]+yi[n]*yi[n]; }
}
void TimeIntegralt (int Npoint,double dx2, double dt, double *norm2, double yr[], double yi[], double yd[], double v[],
double a[], double b[])
{ int nx,ij ;
for ( nx=0; nx<=Npoint; nx++ )
{ dyr[nx] = 0.0; dyi[nx] = 0.0 ;
kr[nx] = 0.0; ki[nx] = 0.0; }
for ( ij=0 ;ij<=3 ;ij++) /* I loop */
{
for ( nx=0; nx<=Npoint; nx++ )
{ ykr[nx]= yr[nx] + a[ij]*kr[nx] ;
yki[nx]= yi[nx] + a[ij]*ki[nx] ; }
for ( nx=1; nx<=Npoint-1; nx++ )
{ kr[nx]=-((yki[nx+1]-2.0*yki[nx]+yki[nx-1])/dx2-v[nx]*yki[nx])*dt;
ki[nx]=-((ykr[nx+1]-2.0*ykr[nx]+ykr[nx-1])/dx2-v[nx]*yki[nx])*dt;
}
for ( nx=0; nx<=Npoint; nx++ )
{ dyr[nx] = dyr[nx] + b[ij]*kr[nx] ;
dyi[nx] = dyi[nx] + b[ij]*ki[nx] ; }
} /* i-loop end */
*norm2=0.0;
for ( nx=0; nx<=Npoint; nx++ )
{ yr[nx] = yr[nx] + dyr[nx];
yi[nx] = yi[nx] + dyi[nx];
yd[nx] = yr[nx]*yr[nx]+yi[nx]*yi[nx];
*norm2=*norm2+yd[nx] ;
}
}
```