HOW TO PERFORM STACK OPERATION IN C

#include<stdio.h>
void main()
{
 int ch,i,top=0,n=5,j,s[5];

 cho:
 clrscr();
 printf("\n\n\n\n\t\t----------------stack--------------- \n");
 printf("\t\tPress 1 for Adding      value.\n\n");
 printf("\t\tpress 2 for Delete the  value.\n\n");
 printf("\t\tPress 3 for Display the value.\n\n");
 printf("\t\tPress 4 for Find  the   value.\n\n");
 printf("\t\tPress 5 for Change the  value.\n\n");
 printf("\t\tPress 6 for exit .\n\n");
 scanf("%d",&ch);


 switch(ch)
 {
   case 1:
     printf("\t\tYour choice is 1 for Entering the value.\n\n");

     if(top>=5)
     {
      printf("Stack is over flow.\n");
     }

     else if(top<=n)
     {
     top=top+1;
     printf("enter your value.");
     scanf("%d",&s[top]);
     }
    getch();

   goto cho;
   case 2:

     printf("\t\tYour choice is 2 for Delete the value.\n\n");
     if(top==0)
     {
     printf("\t\tstack have no element.\n\n");
     }
     else
      top=top-1;



   goto cho;
   case 3:
     printf("\t\tYour choice is 3 for Display element in stack.\n \n");
     if(top==0)
     {
      printf("Stack have no element.");
     }
     else
     {
    for(i=1;i<=top;i++)
    {
        printf("Element %d",s[i]);
        printf("\n");
    }
     }
     getch();
   goto cho;
   case 4:
     printf("\t\tYour choice is 4 for Find the element.\n\n");
     if(top==0)
     {
     printf("Stack have no element");
     }
     else
     {
      printf("Enter number of Element position.");
      scanf("%d",&j);


      printf("%d",s[j]);
      j=0;

     }
   break;
   case 5:
     printf("\t\tYour choice is 5 for Change element value.\n\n");




    break;

    case 6:
     printf("\t\tYour choise is 6 to exit programm \n\n");

     break;



   default:
     printf("\t\tYour choice is invalid.\n\n");
     printf("press any key to go back main menu.\n\n");
     getch();

     goto cho;



  }






 getch();
}