$//$ This program demonstrates the use of dynamic variables

$//$ PLACE YOUR NAME HERE

#include

using namespace std;

const int MAXNAME $=10$;

Lesson $9$A $169$

int main$()$

$\{$

int pos;

char $*$name $=$ nullptr;

int $*$one $=$ nullptr;

int $*$two $=$ nullptr;

int $*$three $=$ nullptr;

int result;

$//$ Fill in code to allocate the integer variable one here

$//$ Fill in code to allocate the integer variable two here

$//$ Fill in code to allocate the integer variable three here

$//$ Fill in code to allocate the character array pointed to by name

cout $<<$ "Enter your last name with exactly $10$ characters." $<<$ endl;

cout $<<"$If your name has $<10$ characters, repeat last letter. $"<<$ endl

$<<$ "Blanks at the end do not count." $<<$ endl;

for $($pos $=0$; pos $<$ MAXNAME; pos$++)$

cin $>>//$ Fill in code to read a character into the name array

$//$ WITHOUT USING a bracketed subscript

cout $<<"$Hi $"$;

for $($pos $=0$; pos $<$ MAXNAME; pos$++)$

cout $<<//$ Fill in code to a print a character from the name array

$//$ WITHOUT USING a bracketed subscript

cout $<<$ endl $<<$ "Enter three integer numbers separated by blanks" $<<$ endl;

$//$ Fill in code to input three numbers and store them in the

$//$ dynamic variables pointed to by pointers one, two, and three.

$//$ You are working only with pointer variables

$//$echo print

cout $<<$ "The three numbers are $"<<$ endl;

$//$ Fill in code to output those numbers

result $=//$ Fill in code to calculate the sum of the three numbers

cout $<<$ "The sum of the three values is $"<<$ result $<<$ endl;

$//$ Fill in code to deallocate one, two, three and name

return $0$;

$\}$

Exercise $1$: Complete the program by filling in the code. $($Areas in bold$)$

This problem requires that you study very carefully the code already

written to prepare you to complete the program.

$170$ LESSON SET $9$ Pointers

Sample Run:

L E S S O N $9$ B

Exercise $2$: In inputting and outputting the name, you were asked NOT to use

a bracketed subscript. Why is a bracketed subscript unnecessary?

Would using name$[$pos$]$ work for inputting the name? Why or why not?

Would using name$[$pos$]$ work for outputting the name? Why or why not?

Try them both and see.