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Date: Mon, 11 Nov 1996 17:12:42 GMTServer: NCSA/1.5Content-type: text/htmlLast-modified: Mon, 30 Sep 1996 00:31:12 GMTContent-length: 3280<HTML><HEAD><TITLE>Quiz 1 Soultions - CS 302 Fall 1996 - Section 4</TITLE></HEAD><BODY><H4 ALIGN=CENTER> <!WA0><!WA0><!WA0><!WA0><!WA0><!WA0><A HREF="http://www.cs.wisc.edu/~cs302">CS 302</A> Fall 1996 - <!WA1><!WA1><!WA1><!WA1><!WA1><!WA1><A HREF="http://www.cs.wisc.edu/~milo/cs302.html">Section 4</A></H4> <H4 ALIGN=CENTER>Quiz 1 Solutions</H4><hr><br><OL> <LI> (2 points) Briefly define the term "algorithm".<br> <br> I accepted many answers for this question. The book's definitionis ``An algorithm is a sequence of precise instructions that leads to a solution.''<br> <br> <LI> (2 points) State one reason that you might want to use functions in a C++ program.<br> <br> There are many possible answers, some examples are: proceduralabstraction, breaking a program into simpler parts, code readablity,reuseable code, using code that someone else wrote for you, etc.<br> <br> <LI> (2 points) State one of the three types of programming errors wetalked about and describe an example of that type.<br> <br>The three types are errors are: compile time error, run time errorand logical error, I also accepted syntax error. A compile timeerrors is when the compiler can't understand your code, so fails whyattempting to compile your program. A run time error is when yourprogram fails and crashes when it is executed. A logical erroroccurs when the program does not report any errors and compile or runtime, but does not produce the correct results.<br> <br> <LI> (2 points) Declare a variable named "number" of type integerand initialize it to be 17.<br> <br> <TT>int number = 17;</TT><br> <br> <LI> (2 points) Declare a constant named "CM_PER_INCH" to be 2.54. <br> <br> <TT>const double CM_PER_INCH = 2.54;</TT><br> <br> <LI> (5 points) What is the output of the following program?<PRE>#include<iostream.h>int main() { int counter = 3, value = 2; while (counter < 7) { value = value * 2; cout << "Value is " << value << endl; if ((counter % 2) == 0) { cout << "Counter is " << counter << endl; } counter++; }}</PRE>Answer:<PRE>Value is 4Value is 8Counter is 4Value is 16Value is 32Counter is 6</PRE> <LI> (5 points) Write a function "calculate_score" which calculatesand returns one team's score of a football game given the number oftouchdowns, field goals, and extra points that team scored (in thatorder). In football touchdowns are worth 6 points, field goals are 3points, and each extra points is 1 point. The score can be calculatedby summing the number of each type of score multiplied by the value ofthat score.<p>So for example, using your function, I could write the following codesegment:<PRE>int viking_score, packer_score;// 3 Touchdowns, 3 field goals, 3 extra pointsviking_score = calculate_score(3, 3, 3); // 3 Touchdowns, 0 field goals, 3 extra pointspacker_score = calculate_score(3, 0, 3);if (viking_score > packer_score) { cout << "Vikings win." << endl;} else if (packer_score < viking_score) { cout << "Packers win." << endl;} else { cout << "Tie game." << endl;}</PRE>Write your code for the function below:<p><PRE>int calculate_score(int td, int fg, int ep) { return ((td * 6) + (fg * 3) + ep);}</PRE></OL></BODY></HTML>⌨️ 快捷键说明
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