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Programming and Problem Solving with C++

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  <td><font face="Times New Roman, Times, Serif" size="3">5. Given the variables </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">dblPtr</font><font face="Times New Roman, Times, Serif" size="3"> and </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">list</font><font face="Times New Roman, Times, Serif" size="3"> of Question 4, show how to deallocate the dynamic data pointed to by </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">dblPtr</font><font face="Times New Roman, Times, Serif" size="3"> and </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">list</font><font face="Times New Roman, Times, Serif" size="3">. (pp. 979986)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">6. Given the declaration and initialization</font></td>
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  <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">float聽delta聽=聽-42.7;</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">how would you declare a variable </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">gamma</font><font face="Times New Roman, Times, Serif" size="3"> to be of type reference to </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">float</font><font face="Times New Roman, Times, Serif" size="3"> and initialize it to contain the memory address of </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">delta</font><font face="Times New Roman, Times, Serif" size="3">? (pp. 987990)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">7. Using the variable </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">gamma</font><font face="Times New Roman, Times, Serif" size="3"> of Question 6, how would you store the value 12.9 into </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">delta</font><font face="Times New Roman, Times, Serif" size="3">? (pp.987990)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">8. Which kind of copy operationdeep or shallowcopies one pointer to another without copying any pointed-to data? (pp. 990997)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">9. As defined by C++, assignment (using an assignment expression) and initialization are two different things. What are the three ways in which one C++ class object is initialized by another? (p. 998)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">10. In designing a C++ class whose class objects point to dynamic data, what are the four member functions you should provide? (p. 1001)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">11. What are two ways in which pointers may be used to improve program efficiency? (pp.1001,1034)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">Answers</font></td>
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  <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">1.聽int*聽聽聽聽聽intPtr;<br />
聽聽聽float*聽聽聽arrPtr;<br />
聽聽聽RecType*聽recPtr;<br />
2.聽a.聽intPtr聽=聽&amp;someVal;<br />
聽聽聽聽聽聽*intPtr聽=聽25;<br />
聽聽聽b.聽arrPtr聽=聽velocity;聽(or聽arrPtr聽=聽&amp;velocity[0];)<br />
聽聽聽聽聽聽arrPtr[2]聽=聽6.43;<br /></font></td>
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聽




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