#include <stdio.h>
#include <string.h>
#include <dir.h>
#include <conio.h>

bool TestBrackets(char *filename)
{
  FILE *fp = fopen(filename, "rt");

  if(!fp)
    return false;

  int OpenParentesis = 0, OpenBracket = 0;
  while(!feof(fp))
  {
    int ch = fgetc(fp);
    switch(ch)
    {
      case '(':
        OpenParentesis++;
      break;

      case ')':
        if(OpenParentesis)
          OpenParentesis--;
        else
          return false;
      break;

      case '{':
        OpenBracket++;
      break;

      case '}':
        if(OpenBracket)
          OpenBracket--;
        else
          return false;
      break;
    }
  }

  return (!OpenParentesis && !OpenBracket);
}

int main(int ArgC, char *ArgV[])
{
  char filename[MAXPATH];
  
  if(ArgC < 2)
  {
    printf("Digite o nome do arquivo: ");
    gets(filename);
  }
  else
    strcpy(filename, ArgV[1]);
  
  if(strlen(filename))
    printf("O arquivo %s%s possui chaves ou parenteses abertos", filename, 
           TestBrackets(filename) ? " nao" : "");

  getch();
    
  return 0;
}