Question

int a=3, b =4, c[10];

int *p;

c[10] is initialized as all elements having a value of 2.

Write C statements for the following:

Make p point to the location of a.

Assign b to have its current value plus the value pointed to by p.

Assign the value of what p is pointing to equal to 0.

Make p point to the third element of c array i.e., first element is c[0]

Now assign to b the contents of the third element of c array using p.

Add 5 to the contents for pointed to by p.

Answer the following after having gone through the above sequence.

What’s the value of *p?

What’s the value to *(p + 3)?

What’s the value of *p++?

Now what’s the value of *p?

Answer 1

int a=3, b =4, c[10];
int *p;
c[10] is initialized as all elements having a value of 2.

Write C statements for the following:

Make p point to the location of a.
p = &a;

Assign b to have its current value plus the value pointed to by p.
b += *p;

Assign the value of what p is pointing to equal to 0.
*p = 0;

Make p point to the third element of c array i.e., first element is c[0]
p = &c[3];

Now assign to b the contents of the third element of c array using p.
b = *p;

Add 5 to the contents for pointed to by p.
*p = *p + 5;

Answer the following after having gone through the above sequence.

What’s the value of *p?
2 + 5 = 7

What’s the value to *(p + 3)?
2

What’s the value of *p++?
2

Now what’s the value of *p?
2