Name: CS 52: Assignment #10 Solved
SKU: 36895
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Description

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Questions: Using the page below, answer these questions.

1. Look at the following examples and write your answer in the column next to the example.

char * name1 = new char[ 6 ];
strcpy( name1, “Henry” );

char * name2 = name1;

name1[0] = ‘D’;

char s1[] = “The rain in Spain falls mainly on the plain.”

char s2[] = “Hello, World!”;

s1[12]=s2[0];

s2[7] = s1[12];

after executing the values of name1 and name2 will be:

name1 = ____________________

name2 = ____________________

after executing the values of s1 and s2 will be:

s1 = ____________________

s2 = ____________________

2. A program includes the following variable declarations:
int i1, i2;
int *p1,*p2;
List the output produced by the following code sample. In addition, using the examples from class, draw a memory diagram showing the 4 variables i1, i2, p1 and p2. Make sure the pointers have a link to the addresses they point to! Draw these diagrams to show the memory state as things change

Code Sample

Output Generated By The Program

Memory Diagram As Things Change

i1 = 8;
i2 = 9;
p1 = &i1;
p2 = &i2;

cout << “*p1=” << *p1 << endl;
cout << “*p2=” << *p2 << endl;

*p1 = 10;
*p2 = *p1;

cout << “i1=” << i1 << endl;
cout << “i2=” << i2 << endl;

p2 = p1;
*p2 = 11;

cout << “*p1=” << *p1 << endl;
cout << “*p2=” << *p2 << endl;

3. A program includes the following variable declarations:
double d1, d2;
double *pd1,*pd2;
List the output produced by the following code sample. In addition, using the examples from class, draw a memory diagram showing the 4 variables d1, d2, pd1 and pd2. Make sure the pointers have a link to the addresses they point to! Draw these diagrams to show the memory state as things change.

Code Sample

Output Generated By The Program

Memory Diagram As Things Change

d1 = 12.4;
d2 = 8.9;
pd1 = &d1;
pd2 = &d2;

*pd1 = *pd2;
*pd2 = 41.6;
d2 = 13.4;

cout << “d1=” << d1 << endl;
cout << “d2=” << d2 << endl;

4. For each variable listed on the left, determine whether that variable must deleted to prevent memory problems. If so, state the appropriate delete statement necessary to destroy the dynamic variable and return the memory it uses to the heap so that other variables may use this memory. Please assume that the following constant declarations have been made:
const int SIZE = 100;

Dynamic Variable Declaration	Must Be Delete( ) ‘ed?	Appropriate delete( ) Statement
char * c = new char(‘b’);	yes no
int i( 7 );	yes no
double * d = new double( 12.1 );	yes no
Student * s = new Student(“you”);	yes no
double doubleArray [ SIZE ];	yes no
int *intArray = new int[ 5 ];	yes no