Thread: Add, Subtract Calculator...

Can someone please tell me what is wrong with this source code?

Code:

#include <iostream.h>	
#include <conio.h>	
int add(int a, int b);
int subt(int c, int d);
int main()
{  	 
  int input, a, b, c, d;
  cout<<"1. Add 2 numbers";
  cout<<"2. Subtract 2 numbers";
  cout<<"3. Exit Calculator";
  cin>>input;	 
  switch (input)	
  {	   
   case 1:
       {
         cout<<"Enter two numbers to be added: ";
         cin>>a>>b;
         cout<<"The sum of your two numbers is: "<<add(a, b);
         cin.get();
         return 0;
       }
       int add(int a, int b)
       {
         cin.get();
         return a+b;
       }
	   break;	 
   case 2:
        {
          cout<<"Enter two numbers to be subtracted: ";
          cin>>c>>d;
          cout<<"The difference of your two numbers is: "<<subt(c, d);
          cin.get();
          return 0;
        }
        int subt(int c, int d);
        {
          cin.get();
          return c-d;
        }
        break;
   case 3:
        return 0;   
  default: 	  
        cout<<"Error, bad input, quitting";	
  }
  return 0;
}

I'm getting the following errors...

Line 23: Parse error before {
Line 27: Break Statement not within loop or switch
Line 28: case label 2 not within loop or switch statement

Thank you in advance for any help!

I understand the return 0; part but what do you mean by move the functions outside of main? Also, how can I fix the case 2 and break problem.

The only reason I gave up is because I've tryed at least 50 different things and couldn't get it to work and I get all confused by big words lol.

I'm sorry. I must be dumb because I cannot get this. Here is the source I have now.

Code:

#include <iostream.h>
#include <conio.h>
int add(int a, int b);
int subt(int c, int d);
int main()
{
  int input, a, b, c, d;
  cout<<"1. Add 2 numbers.";
  cout<<"2. Subtract 2 numbers.";
  cout<<"3. Exit Calculator.";
  cin>>input;
  switch (input)
  {
      case 1:
      cout<<"Enter two numbers to be added: ";
      cin>>a>>b;
      cout<<"The sum of your two numbers is: "<<add(a, b);
      int add(int a, int b)
      return a+b;
      break;
      case 2:
    cout<<"Enter two numbers to be subtracted: ";
    cin>>c>>d;
    cout<<"The difference of your two numbers is: "<<subt(c, d);
    int subt(int c, int d)
    return c-d;
    break;
    case 3:
    return 0;
  }
  cin.get();
  return 0;
}

Now I am getting parse error before return on line 19 and and line 26.
Sorry if this isn't organized. I kept moving stuff around.

Dont expect that too many does this for you

Code:

#include <iostream>  // Use standard header; loose the h
#include <conio.h>  // I dont know if there is a conio header or if this is the standard one.
using namespace std;  // Use this together with iostream
int add(int a, int b);
int subt(int c, int d);
int main()
{
  int input, a, b, c, d;
  cout<<"1. Add 2 numbers.";
  cout<<"2. Subtract 2 numbers.";
  cout<<"3. Exit Calculator.";
  cin>>input;
  switch (input)
  {
      case 1:
      cout<<"Enter two numbers to be added: ";
      cin>>a>>b;
      cout<<"The sum of your two numbers is: "<<add(a, b);
      break;
      case 2:
    cout<<"Enter two numbers to be subtracted: ";
    cin>>c>>d;
    cout<<"The difference of your two numbers is: "<<subt(c, d);
    break;
    case 3:
    return 0;
  }
  cin.get();
  return 0;
}
int add(int a, int b)
{
    
      return (a+b);
}

int subt(int c, int d)
{
    return (c-d);
}

So you have to tell the compiler to go to the section that has the solution or whatever. I think I understand.