Hi,
I have a class template Stack including the functions that are shown below. I want to implement the function calculate which calculates an aritmetic integerexpression with only (09)
I may only leap true expression ones and the adress with one characterat a time.
Every operation is surrounded by a pair of brackets. Its in the character string expression. I can assume that the it only contains the characters(, ), +, , *, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and it doesnt include any errors.
An example of it is: (((6+3)*2)((1+2)/3)) which results in 19.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

template <typename T>
class Stack
{
private:
//some datastructure
public:
Stack();
virtual ~Stack();
void push(T elem);
T pop();
T peek() const;
bool empty() const;
};
//available functions
bool isDigit(char what);
int valueOfDigit(char what);
//to implement
int calculate(char expression[], int n); //n is number of characters
 
Anybody who can help with this practice example?