Simple C++ Calculator

quarantined_coder · #1 (**permalink**) January 19th, 2014, 04:43 AM

SIMPLE C++ Calculator from the book "Beginning Programming" ...

Code:

// C++ Calculator
#include <iostream.h>
void main()
    {
      float num1;
      float num2;
      char op;
      float ans;
      cout << "Please enter a number: ";
      cin >> num1;
      cout << "Please enter another number: ";
      cin >> num2;
      cout << "Press A to add the two numbers." ;
           << endl
           << "Press B to subtract the two numbers"
           << endl
           << "Press C to multiply the two numbers"
           << endl
           << "Press D to divide the two numbers"
           << endl
      cin >> op;
      if (op == 65)
      	ans = num1 + num2;
      if (op == 83)
      	ans = num1 - num2;
      if (op == 77)
      	ans = num1 * num2;
      if (op == 68)
      	ans = num1 / num2;
      cout << "The answer is " << ans << endl;
     }

It dosent compile! Cant find the error! Please help me!

#2 (**permalink**) January 23rd, 2014, 09:37 AM

first, you should change:
#include <iostream.h>
to:
#include <iostream>
using namespace std;

also, this:
cout << "Press A to add the two numbers." ;
<< endl
<< "Press B to subtract the two numbers"
<< endl
<< "Press C to multiply the two numbers"
<< endl
<< "Press D to divide the two numbers"
<< endl

should read:
cout << "Press A to add the two numbers."
<< endl
<< "Press B to subtract the two numbers"
<< endl
<< "Press C to multiply the two numbers"
<< endl
<< "Press D to divide the two numbers"
<< endl;
if you'll notice, the semicolon must be added at the end of each statement, whereas you have one at the end of the first line.
You have one at the end of "Press A to add the two numbers.";
This would be correct if you then added:
cout <<
to the beginning of the following lines of code.

:-) hope that helps