C Pointer Address
Syntax
Get the address of a variable, use & operator.
Example
Define a pointer: include a * before the name of the variable.
Get the address: use &.
#include <stdio.h>
/*from w w w . j a v a 2 s . c o m*/
main ()
{
int i;
int *ia;
i = 10;
ia = &i;
printf (" The address of i is %8u \n", ia);
printf (" The value at that location is %d\n", i);
printf (" The value at that location is %d\n", *ia);
*ia = 50;
printf ("The value of i is %d\n", i);
}
The code above generates the following result.
Example 2
Print addresses using place holders %16lu or %p.
#include <stdio.h>
//from w ww .j a v a2 s .co m
main()
{
int a[5];
int i;
for(i = 0;i<5;i++)
{
a[i]=i;
}
for(i = 0;i<5;i++)
{
printf("value in array %d and address is %16lu\n",a[i],&a[i]);
}
for(i = 0;i<5;i++)
{
printf("value in array %d and address is %p\n",a[i],&a[i]);
}
}
The code above generates the following result.
