check

#include <iostream>
#include <cstdlib>
#include <ctime>
#include <stack>
#include <cstdio>

using namespace std;

typedef char item_t;
#define CHUNK_SIZE 100

class Stack_t
{
    item_t*  items;
    int      top;

public:
    Stack_t() : items(NULL), top(0) {}
    void push(item_t item)
    {
        if (top%CHUNK_SIZE == 0)
        {
            item_t* nitems = new item_t[top + CHUNK_SIZE];
            if (items != NULL)
            {
                for (int i = 0; i < top; i++)
                    nitems[i] = items[i];
            }
            delete []items;
            items = nitems;
        }
        items[top++] = item;
    }
    bool pop(item_t& item)
    {
        if (top == 0)
        {
            cout << "Stack is empty";
            return false;
        }
        item  = items[--top];
        if (top%CHUNK_SIZE == 0)
        {  
            item_t* nitems = NULL;
            if (top > 0)
            {
                nitems = new item_t[top];
                for (int i = 0; i < top; i++)
                    nitems[i] = items[i];
            }
            delete []items;
            items = nitems;
        }
        return true;
    }                            
};


int main()
{
   int option;
 
   cout << "Create a Stack for integers[1] or characters[2]?\n";
   cin >> option;
   if (option == 1)  {
       int i = 0;
       stackMenu(i);
   }
   else if (option == 2) {
        char c = 'a';
        stackMenu(c);
    }
   else  
     return 0;
}

   const int SIZE = 100;

   Stack_t S;
   item_t input[SIZE]    = { 0 };
   item_t S_output[SIZE] = { 0 };
   int i,length;

   printf("Enter a words to reverse> ");
  gets(input);
  for(i=0;input[i]!=NULL;i++)
  {
     S.push(input[i]);
  }

  for(i=0;i<length;i++)
   {
      S.pop(S_output[i]);
 
      if(input[i]!=S_output[i])
      {
            printf("\nThe words are not palindrome\n");
               return 0;   // <- This returns from main() and therefore quite the program
      }

      else // if(Q_output[i]==S_output[i])
           cout << S_output[i];
     }
     printf(" is a palindrome\n");
     
     putchar('\n');
     cin >> i;
     return 0;
}

void stackoptions()
{
   cout << "1: Push\n";
   cout << "2: Pop\n";
   cout << "3: Top\n";
   cout << "4: Quit\n\n";
   cout << "Enter Option: ";
}


template <class T> void stackMenu(T data)
{
   stack<T> mystack;  // create the right stack
   stackoptions();
   int option;
   cin >> option;

   while (option != 4)
   {
      if (option == 1)
         {
            cout << "enter data";
            cin >> data;
            mystack.push(data);
            cout << "Stack Added Value " << data << " to Top\n";
         }
      if (option == 2)
         {
            if (!mystack.empty())
          {
               mystack.pop();
               cout << "Stack Successfully Poped\n";
            }
            else
               cout << "Stack is Empty, Cannot Pop\n";
         }
      if (option == 3)
         {
            if (!mystack.empty())
               cout << "Value at Top is: " << mystack.top() << "\n";
            else
               cout << "Stack is Empty, Cannot Top\n";
         }
      if (option > 3 || option < 1)
         {
            cout << "Invalid Option\n";
         }
      stackoptions();
      cin >> option;
   }
}

[edeloss2@pegasus lab2]$ g++ main.cpp
main.cpp: In function `int main()':
main.cpp:67: implicit declaration of function `int stackMenu(...)'
main.cpp: At top level:
main.cpp:84: ANSI C++ forbids declaration `printf' with no type
main.cpp:84: `int printf' redeclared as different kind of symbol
/usr/local/lib/gcc-lib/alphaev56-dec-osf4.0d/2.95.3/include/stdio.h:179: pr
s declaration of `int printf(const char *, ...)'
main.cpp:84: initialization to `int' from `const char *' lacks a cast
main.cpp:85: ANSI C++ forbids declaration `gets' with no type
main.cpp:85: `int gets' redeclared as different kind of symbol
/usr/local/lib/gcc-lib/alphaev56-dec-osf4.0d/2.95.3/include/stdio.h:210: pr
s declaration of `char * gets(char *)'
main.cpp:85: initialization to `int' from `char *' lacks a cast
main.cpp:86: parse error before `for'
main.cpp:86: syntax error before `!='
main.cpp:86: syntax error before `++'
main.cpp:91: parse error before `;'
main.cpp:91: syntax error before `++'
main.cpp:104: ANSI C++ forbids declaration `printf' with no type
main.cpp:104: redefinition of `int printf'
main.cpp:84: `int printf' previously defined here
main.cpp:104: initialization to `int' from `const char *' lacks a cast
main.cpp:104: multiple initializations given for `printf'
main.cpp:106: parse error before `--'
main.cpp:107: syntax error before `>'