Something

// tikrina ar teisingai kliaustai sudeti

#include <iostream>
#include <cstdlib>
#include "stack.h"

using namespace std;

int main(int argc, char *argv[])
{
  stack s; int i=0;
  char *str; int d=0; int k=0;

  str = "[{[]}]"; int n=6;

  while (i < n)
     {
        switch(str[i])
          {
           case '{': s.push(1); break;
           case '[': s.push(2); break;
          } 
         
       i++;
      }
  i=0;
  while (i< n)
    { 
      switch(str[i])
        {
           case '}': {d = s.pop(); if (d != 1) k++;}; break;
           case ']': {d = s.pop(); if (d != 2) k++;} break;
        } 
      i++;
    }
  d = s.pop();
  if (d != -1 || k != 0) cout << "Skliaustuose klaidu yra" << endl;
  return EXIT_SUCCESS;
}