Global variable question

Consider this:

Code:

---

#include <stdio.h>

int a = 10;

int main(void)
{
    int a = 15;
    int b = a;

    return 0;
}

---

What if I want to assign the value of global variable a to b?

Then don't do something stupid like having two variables of the same name.

Make a pointer to it first. ;)


Quzah.

In C++ you can reference it by saying:

Code:

---

int b = ::a;

---

But that's entirely irrelevent here...

Quote:

---

Originally Posted by csisz3r

Consider this:

Code:

---

#include <stdio.h>

int a = 10;

int main(void)
{
    int a = 15;
    int b = a;

    return 0;
}

---

What if I want to assign the value of global variable a to b?

---

If I recall correctly, the local variable will be used in this situation.
Thus making your global variable usage in main useless.

I know you were just curious. But avoid doing that.

Quote:

---

Originally Posted by csisz3r

Consider this:

Code:

---

#include <stdio.h>

int a = 10;

int main(void)
{
    int a = 15;
    int b = a;

    return 0;
}

---

What if I want to assign the value of global variable a to b?

---

Easy, I'll make the change below:

Code:

---

#include <stdio.h>

int a = 10;

int main(void)
{
    int a = 15;
    int b = a;
    b = 10;
    return 0;
}

---

Quote:

---

Originally Posted by cwr

Easy, I'll make the change below:

Code:

---

#include <stdio.h>

int a = 10;

int main(void)
{
    int a = 15;
    int b = a;
    b = 10;
    return 0;
}

---

---

lol. guys, guys...

pointers are your friend.

that's one great big reason why global variables are considered taboo -- its too easy to hide them, thus using the wrong version.

Code:

---

#include <stdio.h>

int a = 10;

int main(void)
{
  { int a = 15;}
    int b = a;
 
    return 0;
}

---

I think this will do what you want.i just remembered what my teacher said "FOOLISH QUESTION GET FOOLISH ANSWER". :D

No offence :)

Hey, my foolish answer is better :D