int main()
{
char symbol;
StackType stack;
bool balanced = true;
char openSymbol;
cout << "Enter an expression and press return." << endl;
cin.get(symbol);
while (symbol != '\n' && balanced)
{
if (IsOpen(symbol))
stack.Push(symbol);
else if (IsClosed(symbol))
{
if (stack.IsEmpty())
balanced = false;
else
{
openSymbol = stack.Top();
stack.Pop();
balanced = Matches(symbol, openSymbol);
}
}
cin.get(symbol);
}
if (balanced)
cout << "Expression is well formed." << endl;
else
cout << "Expression is not well formed." << endl;
return 0;
}
int main()
{
bool palindrome = true;
char character;
StackType stack;
QueType queue(40);
char stackChar;
char queChar;
cout << "Enter a string; press return." << endl;
cin.get(character);
while (character != '\n')
{
stack.Push(character);
queue.Enqueue(character);
cin.get(character);
}
while (palindrome && !queue.IsEmpty())
{
stackChar = stack.Top();
stack.Pop();
queue.Dequeue(queChar);
if (stackChar != queChar)
palindrome = false;
}
if (palindrome)
cout << "String is a palindrome" << endl;
else
cout << "String is not a palindrome" << endl;
return 0;
}
// Reads and executes commmands from queriesfile.txt
void readqueries(StackType& email, ifstream& in){
char command[30], address[50];
int k;
while (!(in.eof())) {
in >> command;
if (strcmp(command,"LIST-MESSAGES-BY-DATE") == 0)
email.Report();
if (strcmp(command,"LIST-MESSAGES-FROM") == 0){
in>>address;
email.ReportfromSender(address);
}
if (strcmp(command,"DELETE-MOST-RECENT-MESSAGE") == 0)
email.Pop();
if (strcmp(command,"DISPLAY") == 0 ){
in >> k;
email.Get(k);
}