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Programming and Problem Solving with C++

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  <td><font face="Times New Roman, Times, Serif" size="3">11. In arithmetic and relational expressions, which of the following could occur:</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">type promotion, type demotion, or both? (pp. 547551)f:</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">Answers 1. The integral types are </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">char</font><font face="Times New Roman, Times, Serif" size="3">, </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">short,聽int,聽long</font><font face="Times New Roman, Times, Serif" size="3">, and </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">enum</font><font face="Times New Roman, Times, Serif" size="3">. The floating point types are </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">float,聽double,</font><font face="Times New Roman, Times, Serif" size="3"> and </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">long聽double</font><font face="Times New Roman, Times, Serif" size="3">. 2. An expression becomes an expression statement when it is terminated by a semicolon. 3. The external representation is the letter <i>X;</i> the internal representation is the integer 88. 4. Because representational errors can cause the loop termination condition to be evaluated with unpredictable results. 5. 400500.000 (Actually, 4.005E+5)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">6. Floating point arithmetic is subject to numerical inaccuracies and is slower than integer arithmetic on most machines. Use of the smaller integral types, </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">char</font><font face="Times New Roman, Times, Serif" size="3"> and </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">short</font><font face="Times New Roman, Times, Serif" size="3">, can more easily lead to overflow errors. The </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">long</font><font face="Times New Roman, Times, Serif" size="3"> type usually requires more memory than </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">int</font><font face="Times New Roman, Times, Serif" size="3">, and the arithmetic is usually slower.</font></td>
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  <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">7.聽enum聽AutoMakes聽{SAAB,聽JAGUAR,聽CITROEN,聽CHEVROLET,聽FORD};<br />
8.聽for聽(rainbow聽=聽RED;聽rainbow聽</font><font face="Symbol" size="2"></font><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">聽VIOLET;聽rainbow聽=聽VisibleColors聽(rainbow聽+1))</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">9. Named types make a program more readable, more understandable, and easier to modify. Also, a variable of an anonymous enumeration type cannot be assigned to a variable of a named enumeration type, even if the domains of the types are the same. 10. </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">#include聽calendar.h</font><font face="Times New Roman, Times, Serif" size="3"> 11. Type promotion</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3"><i>Exam Preparation Exercises</i></font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">1. Every C++ compiler guarantees that </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">sizeof(int)聽&lt;聽sizeof(long)</font><font face="Times New Roman, Times, Serif" size="3">. (True or False?)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">2. Classify each of the following as either an expression or an expression statement.</font></td>
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  <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">a.聽sum聽=聽0<br />
b.聽sqrt(x)<br /></font></td>
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