c++ not showing a variable

Hi... Im a noob...
I just copied that into my file thing, and I have no idea what it does...
but thats not the problem

2 things
1: I need a good tutorial to learn C++ off
2: the variable "result" isnt showing and I dont know how to edit the code below to make it show
(I added the stuff involving the variables, a,b, result)
please help me...

Code:

---

#include <ios>      // Required for streamsize
#include <iostream>
#include <istream>
#include <limits>  // Required for numeric_limits
using namespace std;

void myflush ( std::istream& in )
{
  in.ignore ( std::numeric_limits<std::streamsize>::max(), '\n' );
  in.clear();
}

void mypause()
{
   
   
   
  std::cin.get();
}

int main()
{
  int number;
 
  int a, b;
  int result;
 
  a=5;
  b=2;
  a=a+1;
  result=a-b;
  std::cout << result; (<<< this line causes it not to pause so I can see what I did)
  return 0;
  // Test with an empty stream
  std::cout<<"Hello, world!\n" ;
  mypause();

  // Leave extra input in the stream

  myflush ( std::cin );
  mypause();

  std::cin.get();
}

---

Try this:

Code:

---

#include <iostream>
using namespace std;

int main()
{
       
        int a = 5;
        int b = 3;

        int result = a + b;
        cout<<result<<endl;

       
        cout<<"Hit return to exit."<<endl;
        cin.get();  //to keep the console window open for your viewing pleasure

        return 0;
}

---

WOW!

Thanks thats simpler
Thank you very much! :D

There's no real reason to change the pausing part of that code, IMO. Your original code is more adaptable and will work as your program gets more complicated. For example, 7stud's version will no longer work if you start reading from cin operator>>. The changes to the variable declarations and initialization are good practice, though.

The real problem is the return 0. That causes the program to end, which means that all the code after it will not be run (including the pauses). Just remove the return 0 and put it at the very end of the main function.

Code:

---

#include <ios>      // Required for streamsize
#include <iostream>
#include <istream>
#include <ostream>  // Required for endl
#include <limits>  // Required for numeric_limits
using namespace std;

void myflush ( std::istream& in )
{
  in.ignore ( std::numeric_limits<std::streamsize>::max(), '\n' );
  in.clear();
}

void mypause()
{
  std::cin.get();
}

int main()
{
  int a = 5;
  int b = 2;

  a = a + 1;
  int result = a - b;
  cout << result << endl;

  cout << "Hit return to exit." << endl;

//  myflush ( std::cin ); <-- Not needed, no input was used in this program.
  mypause();

  return 0;
}

---

The tutorials on this site are good try hitting those up, if you are serious about learning C++ hit up the book listing at the top of this forum.

Well I will have to change it a bit later...

Im progressing fast:) I think