stack and queue implementation using arrays

#include<iostream.h>
#include<conio.h>
#include<stdlib.h>
 int pushs();
 int pops();
 int pushq();
 int popq();

int stack[10];
int q[10];

int main()
{
char m;
loop3:
clrscr();
cout<<"Select any one

";
cout<<"e->Exit from the program
";
cout<<"s->Stack
";
cout<<"q->Queue
";
loop1:
cin>>m;

if(m=='S' || m=='Q')
{
cout<<"Use small letters
";
goto loop1;
}

switch(m)
{

 case 's':
                char st;
                clrscr();
                cout<<"
Stack
";
                cout<<"-----";
                do
                {
                cout<<"
Select any one of the operation

";
                cout<<"u->push a value to the stack
";
                cout<<"o->pop a value from the stack
";
                cout<<"b->Back

";
                loop2:
                cin>>st;
                if(st=='E' || st=='U'|| st=='O'|| st=='B')
                 {
                   cout<<"Use small letters
";
                   goto loop2;
                 }

                 if(st=='b')
                 goto loop3;

                switch(st)
                {
                case 'u':
                  int phs=pushs();
                  if(phs==1)
                    cout<<"The value is pushed into the stack
";
                  else
                    cout<<"The stack is full
";
                   break;
                case 'o':
                  int pps=pops();
                  if(pps==0)
                    cout<<"The Stack is empty
";
                  else
                    cout<<"The top of the stack is: "<<pps<<endl;
                  break;
                default:
                      cout<<"Selection should be valid";
                      break;
    }
   } while(st!='e');
   break;
   case 'q':

      char qt;
      clrscr();
      cout<<"
Queue
";
      cout<<"-----";
      do
                {
                cout<<"
Select any one of the operation

";
                cout<<"u->push a value to the queue
";
                cout<<"o->pop a value from the queue
";
                cout<<"b->Back

";

                loop4:
                cin>>qt;
                if(qt=='E' || qt=='U'|| qt=='O'|| qt=='B')
                 {
                   cout<<"Use small letters
";
                   goto loop4;
                 }

                 if(qt=='b')
                 goto loop3;

                switch(qt)
                {

    case 'u':
                  int phq=pushq();
                  if(phq==1)
                    cout<<"The value is pushed in the queue.
";
                  else
                    cout<<"The queue is full
";
                  break;
    case 'o':
                  int ppq=popq();
                  if(ppq==0)
                    cout<<"The queue is empty
";
                  else
                    cout<<"The value poped from the queue is: "<<ppq<<endl;
                  break;
                  default:
                      cout<<"Selection should be valid";
                      break;

                }
                } while(qt!='e');
                break;
case 'e':
  exit (0);
default:
  cout<<"Selection should be valid";
  break;

     }
   getch();
                  return 0;
}

 int pushs()
                   {
                      int vs,j=0;
                      cout<<"Enter the value that you want to push
";
                      cin>>vs;
                      while(stack[j]=='