assigning a pointer with the value of a pointer..

[keewong]

double *n, *numberTemp, *answer;
	*n = 5;
	*numberTemp = *n;

so im trying to do that.. but it comes up with an error.. can someone help me get by this?

[Zhuge]

You aren't making n point to anything, so you are assigning 5 to a random memory location.

[keewong]

n is the memory location, *n is the value stored in the memory location.. at least that is how I come to understand it.

I got by it by making numberTemp, a standard variable.

I needed numberTemp to be accessible by reference, so I just passed it by reference using &, rather than using a * for pointing.

[vukki]

when you declaring pointer like

double *n;

the pointer, like any other builtin type, remains uninitialized. To initialize it, you can do:

double var;
double * pvar=&var;//pvar now stores address of stack variable 

or you can create new variable in the heap:

double * pvar=new double;//pvar now stores address of newly created heap variable 

but you must delete such variable after use.

[keewong]

hi vukki, that looks to be quite educational, thanks for your response. will have to try it out!