{

int i;

for(i=0;i<gsize;i++)

{

cout << gtable[i][0] << " ";

cout << gtable[i][1] << " ";

cout << gtable[i][2] << "\n";

}

{

int s;int ans=0;

for(s=0;s<n;s++)

ans=ans+tab[s][2];

return ans;

{

int k=0,gs=0;

for(k=0;k<n;k++)

{

gtable[k][0] = k+1;

gtable[k][1] = gs;

gtable[k][2] = gs + 20*tab[k][2];

gs = gtable[k][2];

gsize++;

}

// FCFS gtable Works Okay...

// print_gtable();

// getch();

graphicize();

{

clrscr();

int gd = DETECT, gm, errorcode;

int rect[8]={0};

initgraph(&gd, &gm, "c://turboc3/tc/bgi");

errorcode = graphresult();

if (errorcode != grOk)

{

cout << ":: Graphics error ::";

cout << "\nCheck the BGI Directory Path for Graphics Files";

getch();

exit(1);

}

int gmx=getmaxx();

int gmy=getmaxy();

setviewport((gmx-600)/2, (gmy-200)/2, ((gmx-600)/2)+600, ((gmy-200)/2)+200, 1);

setbkcolor(3);

setcolor(1);

line(0,0,600,0);line(0,30,600,30);line(0,60,600,60);

line(0,90,600,90);line(0,120,600,120);line(0,150,600,150);

line(0,180,600,180);

int r;

int l;

for(l=0;l<gsize;l++)

{

rect[0]=gtable[l][1];

rect[1]=(gtable[l][0]-1)*30;

rect[2]=gtable[l][2];

rect[3]=(gtable[l][0]-1)*30;

rect[4]=gtable[l][2];

rect[5]=gtable[l][0]*30;

rect[6]=gtable[l][1];

rect[7]=gtable[l][0]*30;

setfillstyle(SOLID_FILL,6);

fillpoly(4,rect);

}

setviewport((gmx-600)/2+3, (gmy-200)/2-20, ((gmx-600)/2)+600, ((gmy-200)/2)+200, 1);

outtextxy(0,5,"01");

outtextxy(20,5,"02");

outtextxy(40,5,"03");

outtextxy(60,5,"04");

outtextxy(80,5,"05");

outtextxy(100,5,"06");

outtextxy(120,5,"07");

outtextxy(140,5,"08");

outtextxy(160,5,"09");

outtextxy(180,5,"10");

outtextxy(200,5,"11");

outtextxy(220,5,"12");

outtextxy(240,5,"13");

outtextxy(260,5,"14");

outtextxy(280,5,"15");

outtextxy(300,5,"16");

outtextxy(320,5,"17");

outtextxy(340,5,"18");

outtextxy(360,5,"19");

outtextxy(380,5,"20");

outtextxy(400,5,"21");

outtextxy(420,5,"22");

outtextxy(440,5,"23");

outtextxy(460,5,"24");

outtextxy(480,5,"25");

outtextxy(500,5,"26");

outtextxy(520,5,"27");

outtextxy(540,5,"28");

outtextxy(560,5,"29");

outtextxy(580,5,"30");

setviewport((gmx-600)/2, (gmy-200)/2-20, ((gmx-600)/2)+600, ((gmy-200)/2)+200, 1);

line(0,0,600,0);

for(r=0;r<31;r++)

{

line(20*r,0,20*r,200);

}

setviewport((gmx-600)/2, 50 , ((gmx-600)/2)+600, ((gmy-200)/2)+200, 1);

setcolor(4);

settextstyle(DEFAULT_FONT,HORIZ_DIR,3);

outtext("GANNT CHART");

setviewport((gmx-600)/2, 80 , ((gmx-600)/2)+600, ((gmy-200)/2)+200, 1);

setcolor(8);

settextstyle(DEFAULT_FONT,HORIZ_DIR,1);

outtext("No. of Processes : ");

if(n==1) outtext("1");

if(n==2) outtext("2");

if(n==3) outtext("3");

if(n==4) outtext("4");

if(n==5) outtext("5");

if(n==6) outtext("6");

setviewport((gmx-600)/2, 100 , ((gmx-600)/2)+600, ((gmy-200)/2)+200, 1);

outtext("Scheduling Method : ");

if(choice=='1') outtext("FCFS - First Come First Serve");

if(choice=='2') outtext("SJF - Shortest Job First");

if(choice=='3') outtext("SRTF - Shortest Remaining Time First");

if(choice=='4') outtext("RR - Round Robin");

setviewport((gmx-600)/2-10, (gmy-200)/2, ((gmx-600)/2)+600, ((gmy-200)/2)+200, 1);

setcolor(1);

outtextxy(0,25-15,"1");

outtextxy(0,55-15,"2");

outtextxy(0,85-15,"3");

outtextxy(0,115-15,"4");

outtextxy(0,145-15,"5");

outtextxy(0,175-15,"6");

getch();

closegraph();

{

int cur=0,lt=999,et=0,gs=0,i,j;

for(i=0;i<n;i++)

{

cur=0;lt=999;

for(j=0;j<n;j++)

{

if(tab[j][1]<=et)

{

if(tab[j][2]!=0)

{

if(tab[j][2]<lt)

{

cur=j;

lt=tab[j][2];

}

}

}

}

gtable[i][0]=cur+1;

gtable[i][1]=gs;

gtable[i][2]=gs + 20 * tab[cur][2];

gsize++;

gs=gtable[i][2];

et=et+tab[cur][2];

tab[cur][2]=0;

}

// SJF gtable works okay....

graphicize();

{

int cur=0,lt=999,et=0,gs=0,i,j;

for(i=0;i<ttt;i++)

{

cur=0;lt=999;

for(j=0;j<n;j++)

{

if(tab[j][1]<=et)

{

if(tab[j][2]!=0)

{

if(tab[j][2]<lt)

{

cur=j;

lt=tab[j][2];

}

}

}

}

gtable[i][0]=cur+1;

gtable[i][1]=gs;

gtable[i][2]=gs+20;

gsize++;

gs=gs+20;

et++;

tab[cur][2]=tab[cur][2]-1;

}

// SRTF gtable works okay...

graphicize();

{

int q;

cout << "\nEnter the Quantum Size : ";

cin >> q;

int cur=-1,et=0,gs=0,gvar=0;

while(et<ttt)

{

cur++;

if(cur==n) cur=0;

if(tab[cur][1]<=et)

{

if(tab[cur][2]!=0)

{

gvar++;

if(tab[cur][2]<q)

{

et=et+tab[cur][2];

gtable[gvar-1][0]=cur+1;

gtable[gvar-1][1]=gs;

gtable[gvar-1][2]=gs + tab[cur][2] * 20;

gs=gtable[gvar-1][2];

gsize++;

tab[cur][2]=0;

}

else

{

et=et+q;

gtable[gvar-1][0]=cur+1;

gtable[gvar-1][1]=gs;

gtable[gvar-1][2]=gs + q*20;

gsize++;

gs=gtable[gvar-1][2];

tab[cur][2]=tab[cur][2]-q;

}

}

}

}

// RR gtable works okay...

graphicize();

{

clrscr();

cout << "Enter the Number of Process : ";

cin >> n;

cout << "\n\n1) FCFS 2) SJF 3) SRTF 4) RR\n\n";

cout << "Enter Your Choice : ";

cin >> choice;

cout << "\n";

int i;

for(i=0;i<n;i++)

{

cout << "Arrival Time & Service Time for Process " << i+1 << " : ";

tab[i][0]=i+1;

cin >> tab[i][1];

cin >> tab[i][2];

}

ttt=totaltime();

switch(choice)

{

case '1': fcfs();break;

case '2': sjf();break;

case '3': srtf();break;

case '4': rr();break;

default : exit(0);

}

}