8.6: Exercises

Exercise \(\PageIndex{1}\)

Declare a pointer to a floating point variable, naming it fptr.

Exercise \(\PageIndex{2}\)

Declare a pointer to a signed character variable, naming it cptr.

Exercise \(\PageIndex{3}\)

Consider the following snippet of code:

unsigned char c, *p;

Explain the difference between c and p.

Exercise \(\PageIndex{4}\)

Consider the following snippet of code:

unsigned char *p;
double *p2;

Assume that the value of p is currently 1000 and the value of p2 is 2000. What are their values after the following piece of code is executed?

p++;
p2++;

Exercise \(\PageIndex{5}\)

Explain the difference between the * and & operators in relation to pointers.

Exercise \(\PageIndex{6}\)

Consider the line of code below.

a = b*c;

Is the * operator a pointer dereference or a multiply? How do we know?

Exercise \(\PageIndex{7}\)

Consider the line of code below.

a = b**c;

What do you think this line does? How might you alter this line to mark the intent more clearly and less prone to error or misinterpretation?

Exercise \(\PageIndex{8}\)

Explain the difference between the two lines of code below.

a*=b;
a=*b;