Calculator performs basic arithmetic and uses variables

[tjmohney]

I have a working calculator , token and a balanced parentheses file.
this is my calc.cc file
#include <cstdlib>
#include <iostream>
#include <math.h>
using namespace std;

int main()
{
double num;
double num2;
char choice;
for (;;){
do {
cout<<"Please choose an option by entering the number, press q to quit\n";
cout<<"1 - Addition\n";
cout<<"2 - Subtraction\n";
cout<<"3 - Division\n";
cout<<"4 - Multiplication\n";
cout<<"5 - Raise to power\n";
cout<<"6 - Unary Minus\n";
cin>>choice;
} while ( choice < '1' || choice > '6' && choice != 'q');
if (choice == 'q') break;
switch (choice) {
case '1':
cout<<"Please enter a number\n";
cin>>num;
cout<<"Another number to be added\n";
cin>>num2;
cout<<"The answer is:";
cout<<num + num2;
cout<<"\n";
break;
case '2':
cout<<"Please enter a number\n";
cin>>num;
cout<<"Another number to be subtracted\n";
cin>>num2;
cout<<"The answer is:";
cout<<num - num2;
cout<<"\n";
break;
case '3':
cout<<"Please enter a number\n";
cin>>num;
cout<<"Another one to be divided\n";
cin>>num2;
cout<<"The answer is:";
cout<<num / num2;
cout<<"\n";
break;
case '4':
cout<<"Please enter a number\n";
cin>>num;
cout<<"Another one to be multiplied\n";
cin>>num2;
cout<<"The answer is:";
cout<<num * num2;
cout<<"\n";
break;
case '5':
cout<<"Please enter a number\n";
cin>>num;
cout<<"Another number to be its power\n";
cin>>num2;
cout<<"The answer is:";
cout<<pow(num,num2);
cout<<"\n";
break;
case '6':
cout<<"Please enter number to be negated\n";
cin>>num;
cout<<"The answer is:";
cout<<num*-1;
cout<<"\n";
break;
default:
cout<<"That is not an option";

}

}
return 0;
}

this is my token.cc file
//#include <cmath>
//#include "calc.h"
//#include <stack>
#include <iostream>

#include <sstream>

#include <string>


using namespace std;



int main(){



string s;

string sa[20];

cout<<"Enter Text: " <<endl;

getline(cin,s);



cout<<"Entered Text is: " << s <<endl;



istringstream iss(s);

int count = 0;



while(iss){

string sub;

iss>>sub;

if(sub == "") // breaking input string into tokens

break;

cout <<"token " << count << ": " <<sub <<endl;

sa[count]= sub; // putting into array

count = count + 1;



}





cout<<"Number of tokens "<<count << endl<<endl;

for(int i = 0; i<4; i++){ // print first and 2nd number tokens

cout<< i + 1 <<" Element of user input is: "<<sa[i]<<endl;

}



return 0;

}

this is my balanced parentheses file.
#include <iostream>
#include <stack>
#include <string>

using namespace std;

int main(void) {
string s;
int i;
stack<char> myStack;

cout << "enter parentheses: ";
cin >> s;

for (i=0;i<s.length();i++)
if (s[i] == '(' || s[i] == '[' || s[i] == '{')
myStack.push('(' || '[' || '{');
else if (s[i] == ')' || ']' || '}')
if (myStack.size() == 0) {
cout << "Error: ) with no matching (\n";
return 1;
} else
myStack.pop();
else
cout << "Invalid character [" << s[i] << "]\n";

if (myStack.size() == 0)
cout << "Parentheses balanced.\n";
else
cout << "Error: ( with no matching )\n";

return 0;
}

My token.cc file is suppose to identify the type of item. which i am unsure how to do...???

My question is how to combine these programs to make one .cc file, as well as what to put in the .h file??

my calc program is suppose to do the following :
arithmetic operations : +,-,*,/ and ^
Unary minus
Parenthesis
Storing values in variables using assignment operator =
using variable in calculations

[9y8C5Di1]

You need to have the input as a string. Create a function that scans strings for numbers(0-9) and saves the numbers in different dynamically assigned variables. Create the same concept again, but now only with mathematical operators. With these simple functions you can draw out numbers from a string and then determine with the mathematical operator function what properties they will have. Then just convert the string into a float or a numeric type.

[tjmohney]

But where does that function get created?

[9y8C5Di1]

You will have to write it yourself, in your code.