Python Programming: An Introduction to Computer Science, 3rd Ed.
3rd Edition
ISBN: 9781590282755
Author: John Zelle
Publisher: Franklin, Beedle & Associates
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Chapter 6, Problem 7MC
Program Description Answer
In Python, the reason for which the function is not used is to demonstrate intellectual superiority.
Hence, the correct answer is option “D”.
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Which of the following is not a reason to use functions?a) to reduce code duplicationb) to make a program more modularc) to make a program more self-documentingd) to demonstrate intellectual superiority
Full source code with a comment in the C program only
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(CarbonFootprint Calculator: Arrays of Function Pointers) Using arrays of function pointers, as you learned in this chapter, you can specify a set of functions that are called with the same types of arguments and return the same type of data. Governments and companies worldwide are becoming increasingly concerned with carbon footprints (annual releases of carbon dioxide into the atmosphere) from buildings burning various types of fuels for heat, vehicles burning fuels for power, and the like. Many scientists blame these greenhouse gases for the phenomenon called global warming. Create three functions that help calculate the carbon footprint of a building, a car and a bicycle, respectively. Each function should input appropriate data from the user then calculate and display the carbon footprint. (Check out a few websites that explain how to calculate carbon footprints.) Each function should receive no parameters and return…
What happens after a function has been called and the code in the function body has been executed?
A. The function is defined.
B. Program execution jumps to the function definition and executes the code in the function body.
C. The function is destroyed.
D. Program execution returns to where the function was called.
What is the best way to reuse lines of code?
A. Copy and paste them wherever needed
B. Lines of code cannot be reused
C. Include them once at the top of the program
D. Define them once within a function and then call the function as needed
The int() function is an example of a
A. library function
B. built-in function
C. user defined function
D. alternate function
Chapter 6 Solutions
Python Programming: An Introduction to Computer Science, 3rd Ed.
Ch. 6 - Prob. 1TFCh. 6 - Prob. 2TFCh. 6 - Prob. 3TFCh. 6 - Prob. 4TFCh. 6 - Prob. 5TFCh. 6 - Prob. 6TFCh. 6 - Prob. 7TFCh. 6 - Prob. 8TFCh. 6 - Prob. 9TFCh. 6 - Prob. 10TF
Ch. 6 - Prob. 1MCCh. 6 - Prob. 2MCCh. 6 - Prob. 3MCCh. 6 - Prob. 4MCCh. 6 - Prob. 5MCCh. 6 - Prob. 6MCCh. 6 - Prob. 7MCCh. 6 - Prob. 8MCCh. 6 - Prob. 9MCCh. 6 - Prob. 10MCCh. 6 - Prob. 1DCh. 6 - Prob. 2DCh. 6 - Prob. 3DCh. 6 - Prob. 4DCh. 6 - Prob. 5DCh. 6 - Prob. 1PECh. 6 - Prob. 2PECh. 6 - Prob. 3PECh. 6 - Prob. 4PECh. 6 - Prob. 5PECh. 6 - Prob. 6PECh. 6 - Prob. 7PECh. 6 - Prob. 8PECh. 6 - Prob. 9PECh. 6 - Prob. 10PECh. 6 - Prob. 11PECh. 6 - Prob. 12PECh. 6 - Prob. 13PECh. 6 - Prob. 14PECh. 6 - Prob. 16PECh. 6 - Prob. 17PE
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- Mark the following statements as true or false: a. To use a predefined function in a program, you need to know only the name of the function and how to use it. (1) b. A value-returning function returns only one value. (2, 3) c. Parameters allow you to use different values each time the function is called. (2, 7, 9) d. When a return statement executes in a user-defined function, the function immediately exits. (3, 4) e. A value-returning function returns only integer values. (4) f. A variable name cannot be passed to a value parameter. (3, 6) g. If a C++ function does not use parameters, parentheses around the empty parameter list are still required. (2, 3, 6) h. In C + + , the names of the corresponding formal and actual parameters must be the same. (3, 4, 6) i. A function that changes the value of a reference parameter also changes the value of the actual parameter. (7) j. Whenever the value of a reference parameter changes, the value of the actual parameter changes. (7) k. In C++, function definitions can be nested; that is, the definition of one function can be enclosed in the body of another function. (9) l. Using global variables in a program is a better programming style than using local variables, because extra variables can be avoided. (10) m. In a program, global constants are as dangerous as global variables. (10) n. The memory for a static variable remains allocated between function calls. (11)arrow_forward6 . Same names can be used for different functions without any conflict. True False 7 . The variables commonly used in C functions are availableto all the functions in a program. True False 8 . Members of different structures must have unique names. True False 9 . How can we return control from a called function to the caller function a. struct b. return c. printf 10. A variable that’s known only within the function in which it’s defined is called a(n). a. Local Variable b. Global Variable 11 . The _______ of an identifier is the portion of the program in which the identifier can be used. a. Function Definition b. Function Declaration c. Function Call d. Function Return 12 . What is the only function all C++ programs must contain? a. start() b. system() c. main() d. program()arrow_forwardk. What is procedural decomposition? A) The ability to take in input and return output B) The process of calling a function and saving its return value C) The process of breaking a set of code into functions that each do one thing D) The ability to break down a process into input, parameters, and outputarrow_forward
- • Why do we use function prototypes? • What is the difference between arguments and parameters? • When to use local variables and when to use parameters?arrow_forward5). What is an inline function? a) A function that is expanded at each call during execution b) A function that is called during compile time c) A function that is not checked for syntax errors d) A function that is not checked for semantic analysisarrow_forwardQ: Choose the correct answer with the explanation reason of your choice 1. Which of the following is the default return value of functions in C++? a) int b) char c) float d) void 2. If an argument from the parameter list of a function is defined constant then a) It can be modified inside the function b) It cannot be modified inside the function c) Error occurs d) Segmentation fault 3. From which function the execution of a C++ program starts? a) start() function b) main() function c) new() function d) end() functionarrow_forward
- 1. Briefly describe the items a programmer needs to know when using a predefined function, including the header file name, the function name, the parameter type, and the return type. 2. Define the terms function header (or heading), function body, and function definition. Describe the elements of a function. 3. Define the terms actual parameter and formal parameter and explain the difference between the two. 4. Describe in detail the flow of execution in a program with functions. Review the use of function prototypes to facilitate compilation. Also, explain how a function call operates during program execution. 5. Discuss how a function call operates in terms of how the values in the actual parameters are transferred to the formal parameters.arrow_forwardProgramming Language: C++ 4. Select the two correct statements about stub functions: Select one or more: a. stubs are used to test the functionality of a program b. stubs must return a value c. stubs are programs that test if a called function returns the correct result d. stubs are simpler than the functions they replacearrow_forwardQ2) A program consists of three parts, a part that should run sequentially and two other functions that could be parallelized. The compiler has an optimization that applies to function1 of the program that speeds function1 up by 2x, and an optimization that applies to function2 of the program that speeds function2 up by 4x. If function1and function2 respectively comprises 25% and 40% of the execution time of the program before any optimization. 1. Find the speed up if function1 and function2 cannot be run concurrently. 2. Find the speed up if function1 and function2 are run concurrently.arrow_forward
- Select correct choice about functions? A) Each function should be written multiple times and it can be called once. B) Each function should be written once and it can be called multiple times. C) All of these choices. (D) Each function should be written once and it can be called once.arrow_forward44. Automatic Data - Explicitly allocated and deallocated during program execution by C++ Instructions written by programmer using operators new and delete True False Question 45 45. Big-O gives an upper bound on the growth rate of a function True False Question 46arrow_forwardWrite C++ program to currency exchange, which is the process that allows customers to exchange one currency for another. The program will include decision-making statements, loops, arrays, file I/O, string, and functions. You should be following below details: • As you might know, currency rates are influenced by several factors such a country's economic performance. Thus, it is better to get the up to-date currency rates from an external source as it is easier to update. You should read the data from the file "ExchangeRate.txt". • "ExchangeRate.txt" file contain: 1.00 SAR 0.08 KWD 1.00 SAR 0.97 QAR 1.00 SAR 0.98 AED 1.00 SAR 0.10 BHD 1.00 SAR 0.10 OMR 1.00 QAR 0.08 KWD 1.00 QAR 1.01 AED 1.00 QAR 0.10 BHD 1.00 QAR 0.11 OMR 1.00 KWD 12.00 AED 1.00 KWD 1.23 BHD 1.00 KWD 1.26 OMR 1.00 AED 0.10 BHD 1.00 AED 0.10 OMR 1.00 BHD 1.02 OMR The program should print the available currencies for exchange which are: o SAR --> Saudi Arabia Riyal o KWD --> Kuwaiti Dinar o QAR --> Qatar Riyal o AED -->…arrow_forward
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