I got stuck in this program and dont know how to start to phase 2, i finish phase 1 quite good bt i dont understand connection phase 1 and phase 2. so i hope some one can help me pls, thank you very much.....
phase 2:Expand Phase 1 to translate the typical infix statements to postfix. The postfix should be printed out and then calculated. For example: (3+5)*9? should output 3 5 + 9 * = 72.
and i finish my phase 1
header.h
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
class Lexeme
{
private:
string Lex;
string type;
public:
Lexeme();
string getLex ();
string gettype ();
void setLex (string);
void settype (string);
};main.cpp
#include "TheHeader.h"
#include <stack>
void ReadFile();
int main ()
{
ReadFile();
return 0;
}
void ReadFile()
{
char a;
string str = "";
Lexeme temp;
stack <Lexeme> name;
ifstream file ("sample.txt",ios::in);
if(!file)
{
cout<<"Unable to open the file!!!" <<endl;
exit(1);
}
file >> a;
while (file)
{
if (a == '/' ||a == '*' ||a == '+' ||a == '-' ||a == ';' ||a == '^'||a == '='||a == '('||a == ')')
{cout << a << " symbol" << endl ;
str = a;
temp.setLex(str);
temp.settype("SYMBOL");
name.push(temp);
file >> a;
}
else {str = a;file >> a;
while( a >= '0' && a <= '9' || a == '.')
{
str.append(1,a);
file >> a;
}
temp.setLex(str);
temp.settype("NUMBER");
name.push(temp);
cout << str << " number" <<endl ;
str = "";
}
}
file.close();
}header.cpp
#include "TheHeader.h"
Lexeme::Lexeme()
{
Lex = "";
type ="";
}
string Lexeme::getLex ()
{
return Lex;
}
string Lexeme::gettype ()
{
return type;
}
void Lexeme::setLex(string b)
{
Lex = b;
}
void Lexeme::settype (string c)
{
type = c;
}hope someone can guide me to right direction, i will spend all my time of this weekend to work on this problem only
thank youi