Problem Solving with C++ (9th Edition)
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Problem Solving with C++ is intended for use in the C++ introductory programming course. Created for the beginner, it is also suitable for readers interested in learning the C++ programming language.
Problem Solving with C++ continues to be the most widely used textbook by students and instructors in the introduction to programming and C++ language course. Through each edition, hundreds and thousands of students have valued Walt Savitch’s approach to programming, which emphasizes active reading through the use of well-placed examples and self-test examples. Created for the beginner, this book focuses on cultivating strong problem-solving and programming techniques while introducing students to the C++ programming language.
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Variable_Declarations Statement_1 Statement_2 ... Statement_Last return 0; } In Display 1.8, the variable declarations are on the line that begins with the word int. As we will see in the next chapter, you need not place all your variable declarations at the beginning of your program, but that is a good default location for them. Unless you have a reason to place them somewhere else, place them at the start of your program as shown in Display 1.9 and in the sample program in Display 1.8. The
best thought of as the user’s chief servant. 8. An operating system’s purpose is to allocate the computer’s resources to different tasks the computer must accomplish. 9. Among the possibilities are the Macintosh operating system Mac OS, Windows 2000, Windows XP, VMS, Solaris, SunOS, UNIX (or perhaps one of the UNIX-like operating systems such as Linux). There are many others. 10. The object code for your C++ program must be combined with the object code for routines (such as input and output
interest on the last payment. If you owe $50, then your monthly payment of $50 will not pay off your debt, although it will come close. One month’s interest on $50 is only 75 cents. 10. Write a program that reads in ten whole numbers and that outputs the sum of all the numbers greater than zero, the sum of all the numbers less than zero (which will be a negative number or zero), and the sum of all the numbers, whether positive, negative, or zero. The user enters the ten numbers just once each and
115 116 CHAPTER 3 / More Flow of Control short-circuit evaluation complete evaluation second expression), then C++ does not bother to evaluate the second expression. This method of evaluation is called short-circuit evaluation. Some languages, other than C++, use complete evaluation. In complete evaluation, when two expressions are joined by an && or an ||, both subexpressions are always evaluated and then the truth tables are used to obtain the value of the final expression. Both
statements): if (!time > limit) Something else Something_Else Wrong for what we want This sounds right if you read it out loud: “not time greater than limit.” The Boolean expression is wrong, however, and unfortunately, the compiler will not give you an error message. We have been bitten by the precedence rules of C++. The compiler will instead apply the precedence rules from Display 3.2 and interpret your Boolean expression as the following: (!time) > limit This looks like nonsense, and