Solution for Exercise 18-12

ex1812

#include <stdio.h>

int main()
{
    int v = 1812;
    int *pv = &v;

    printf("The value if 'v' is %d\n",*pv);
    return(0);
}

Output

The value if 'v' is 1812

Notes

* The int variable v is declared and assigned a value at Line 5. You could also declare the variable and assign its value separately.

* The int pointer variable pv is declared at Line 6, plus it's immediately initialized to the address of int variable v. This approach is different from using two separate statements because the * is used to declare a pointer variable, but you don't use the * when initializing a pointer variable to an address. Here are the two statements you could otherwise use:

int *pv; pv = &v;

* Line 8 displays the value assigned to variable v (at Line 5) by using the pointer *pv.

Exercise ex1813 →