STARTING OUT WITH C++FROM CONTROL STRU
18th Edition
ISBN: 9781323815458
Author: GADDIS
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 9, Problem 9PC
Median Function
In statistics, when a set of values is sorted in ascending or descending order, its median is the middle value. If the set contains an even number of values, the median is the mean, or average, of the two middle values. Write a function that accepts as arguments the following:
A) An array of integers
B) An integer that indicates the number of elements in the array
The function should determine the median of the array. This value should be returned as a double. (Assume the values in the array are already sorted.)
Demonstrate your pointer prowess by using pointer notation instead of array notation in this function.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
(CP6) Write a function that is passed an array of structs and performs calculations. The function should locate the highest gpa from a group of students. The function is passed the array of structs, the first element to be searched, and the last element to be searched. The return value of the function is the highest gpa in the search range.
struct data{ string name; double gpa;};
double highestGpa( data [ ], int, int );
data [ ] - array of structs to search
int - first element to be searched
int - last element to be searched
return - highest gpa from group
Write the function definition for a value returning function that receives an array of integer values, the array length, and an integer target value as parameters. The function should perform a li ear (sequencial) search for the target value. If the value is found, the function should return the index position of the target value, otherwise, it should return -1. Write only the function definition.
1- Write a user-defined function that accepts an array of integers. The function should generate the percentage each value in the array is of the total of all array values. Store the % value in another array. That array should also be declared as a formal parameter of the function. 2- In the main function, create a prompt that asks the user for inputs to the array. Ask the user to enter up to 20 values, and type -1 when done. (-1 is the sentinel value). It marks the end of the array. A user can put in any number of variables up to 20 (20 is the size of the array, it could be partially filled). 3- Display a table like the following example, showing each data value and what percentage each value is of the total of all array values. Do this by invoking the function in part 1.
Chapter 9 Solutions
STARTING OUT WITH C++FROM CONTROL STRU
Ch. 9.5 - Prob. 9.1CPCh. 9.5 - Write the definition statement for a variable...Ch. 9.5 - List three uses of the symbol in C++.Ch. 9.5 - What is the output of the following code? int x =...Ch. 9.5 - Rewrite the following loop so it uses pointer...Ch. 9.5 - Prob. 9.6CPCh. 9.5 - Prob. 9.7CPCh. 9.5 - Is each of the following definitions valid or...Ch. 9.9 - Prob. 9.9CPCh. 9.9 - Give an example of the proper way to call the...
Ch. 9.9 - Complete the following program skeleton. When...Ch. 9.9 - Look at the following array definition: const int...Ch. 9.9 - Assume ip is a pointer to an int. Write a...Ch. 9.9 - Prob. 9.14CPCh. 9.9 - Prob. 9.15CPCh. 9.9 - Prob. 9.16CPCh. 9.9 - Prob. 9.17CPCh. 9 - What does the indirection operator do?Ch. 9 - Look at the following code. int x = 7; int iptr =...Ch. 9 - So far you have learned three different uses for...Ch. 9 - Prob. 4RQECh. 9 - Prob. 5RQECh. 9 - Prob. 6RQECh. 9 - What is the purpose of the new operator?Ch. 9 - What happens when a program uses the new operator...Ch. 9 - Prob. 9RQECh. 9 - Prob. 10RQECh. 9 - Prob. 11RQECh. 9 - Prob. 12RQECh. 9 - Each byte in memory is assigned a unique...Ch. 9 - The _________ operator can be used to determine a...Ch. 9 - Prob. 15RQECh. 9 - The ________ operator can be used to work with the...Ch. 9 - Array names can be used as ________, and vice...Ch. 9 - Prob. 18RQECh. 9 - The ________ operator is used to dynamically...Ch. 9 - Under older compilers, if the new operator cannot...Ch. 9 - Prob. 21RQECh. 9 - When a program is finished with a chunk of...Ch. 9 - You should only use pointers with delete that were...Ch. 9 - Prob. 24RQECh. 9 - Look at the following array definition: int...Ch. 9 - Prob. 26RQECh. 9 - Assume tempNumbers is a pointer that points to a...Ch. 9 - Look at the following function definition: void...Ch. 9 - Prob. 29RQECh. 9 - Prob. 30RQECh. 9 - Prob. 31RQECh. 9 - T F The operator is used to get the address of a...Ch. 9 - T F Pointer variables are designed to hold...Ch. 9 - T F The symbol is called the indirection...Ch. 9 - T F The operator dereferences a pointer.Ch. 9 - T F When the indirection operator is used with a...Ch. 9 - T F Array names cannot be dereferenced with the...Ch. 9 - Prob. 38RQECh. 9 - T F The address operator is not needed to assign...Ch. 9 - T F You can change the address that an array name...Ch. 9 - T F Any mathematical operation, including...Ch. 9 - T F Pointers may be compared using the relational...Ch. 9 - T F When used as function parameters, reference...Ch. 9 - T F The new operator dynamically allocates memory.Ch. 9 - T F A pointer variable that has not been...Ch. 9 - Prob. 46RQECh. 9 - T F In using a pointer with the delete operator,...Ch. 9 - Prob. 48RQECh. 9 - Prob. 49RQECh. 9 - int x, ptr = nullptr; ptr = x;Ch. 9 - Prob. 51RQECh. 9 - Prob. 52RQECh. 9 - Prob. 53RQECh. 9 - float level; int fptr = level;Ch. 9 - Prob. 55RQECh. 9 - Prob. 56RQECh. 9 - Prob. 57RQECh. 9 - Prob. 58RQECh. 9 - int pint = nullptr; pint = new int[100]; //...Ch. 9 - Prob. 60RQECh. 9 - Prob. 61RQECh. 9 - Prob. 62RQECh. 9 - Array Allocator Write a function that dynamically...Ch. 9 - Test Scores #1 Write a program that dynamically...Ch. 9 - Drop Lowest Score Modify Problem 2 above so the...Ch. 9 - Test Scores #2 Modify the program of Programming...Ch. 9 - Prob. 5PCCh. 9 - Case Study Modification #1 Modify Program 9-19...Ch. 9 - Case Study Modification #2 Modify Program 9-19...Ch. 9 - Mode Function In statistics, the mode of a set of...Ch. 9 - Median Function In statistics, when a set of...Ch. 9 - Reverse Array Write a function that accepts an int...Ch. 9 - Array Expander Write a function that accepts an...Ch. 9 - Element Shifter Write a function that accepts an...Ch. 9 - Movie Statistics Write a program that can be used...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
What is an input file?
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
What is a ToolTip?
Starting Out With Visual Basic (8th Edition)
Create a table of first level minterms for the expression in Problem 54 (similar to Table 4-11)
Digital Fundamentals (11th Edition)
Does the following algorithm have a polynomial or nonpolynomial time complexity? Explain your answer. def myste...
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Describe the purpose of the access key attribute and how it supports accessibility.
Web Development and Design Foundations with HTML5 (9th Edition) (What's New in Computer Science)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- (Statistics) Write a program that includes two functions named calcavg() and variance(). The calcavg() function should calculate and return the average of values stored in an array named testvals. The array should be declared in main() and include the values 89, 95, 72, 83, 99, 54, 86, 75, 92, 73, 79, 75, 82, and 73. The variance() function should calculate and return the variance of the data. The variance is obtained by subtracting the average from each value in testvals, squaring the values obtained, adding them, and dividing by the number of elements in testvals. The values returned from calcavg() and variance() should be displayed by using cout statements in main().arrow_forward(Numerical) Write and test a function that returns the position of the largest and smallest values in an array of double-precision numbers.arrow_forward(Statistics) a. Write a C++ program that reads a list of double-precision grades from the keyboard into an array named grade. The grades are to be counted as they’re read, and entry is to be terminated when a negative value has been entered. After all grades have been input, your program should find and display the sum and average of the grades. The grades should then be listed with an asterisk (*) placed in front of each grade that’s below the average. b. Extend the program written for Exercise 1a to display each grade and its letter equivalent, using the following scale: Between90and100=AGreaterthanorequalto80andlessthan90=BGreaterthanorequalto70andlessthan80=CGreaterthanorequalto60andlessthan70=DLessthan60=Farrow_forward
- (Data processing) A bank’s customer records are to be stored in a file and read into a set of arrays so that a customer’s record can be accessed randomly by account number. Create the file by entering five customer records, with each record consisting of an integer account number (starting with account number 1000), a first name (maximum of 10 characters), a last name (maximum of 15 characters), and a double-precision number for the account balance. After the file is created, write a C++ program that requests a user-input account number and displays the corresponding name and account balance from the file.arrow_forward(Data processing) The answers to a true-false test are as follows: T T F F T. Given a twodimensional answer array, in which each row corresponds to the answers provided on one test, write a function that accepts the two-dimensional array and number of tests as parameters and returns a one-dimensional array containing the grades for each test. (Each question is worth 5 points, so the maximum possible grade is 25.) Test your function with the following data:arrow_forwardPHP Write a modeMaker function Write a function modeMaker() that forms a closure such that the function it returns can be used with your reduce() function above to find the mode of an array. The mode of an array is the value that appears the most frequently (so in the $arr above, the mode is 5). To do this, you will need an array called $seen that keeps the count of times an element has been examined At the end of the reduce function, the $seen array should look like the following for the $arr above: Array ( [10] => 1 [5] => 3 [3] => 1 [1] => 1 [2] => 1 [7] => 1 ) Note that the closure you generate should always be returning the current mode for what it has seen so far (so it will either be the current mode, or the new element passed in). The following is a start for modeMaker: function modeMaker() { $seen = array(); return function($current, $new) use (&$seen) { // your code that uses $seen goes here }; } $mode =…arrow_forward
- C code Blocks Write the complete function that receives a pointer to the array's first element as an argument and multiplies the third element of the array by 10. Define your function in the same way as the given function prototype. Take a look at the "For example" below to see how the function is used in the main function and the expected result. #include <stdio.h>#include <stdlib.h>void multiplyElement(int *ptr);int main(){ int array[5] = {1,2,3,4,5}; int *arrPtr = NULL; arrPtr = &array[0]; multiplyElement(arrPtr); for(int i = 0; i < 5; i++){ printf("%d ", array[i]); }return 0;}//Your answer starts here For example: Test Result int array[5] = {1,2,3,4,5}; int *arrPtr = NULL; arrPtr = &array[0]; multiplyElement(arrPtr); for(int i = 0; i < 5; i++){ printf("%d ", array[i]); } 1 2 30 4arrow_forward9.12: Element ShifterWrite a function that accepts an int array and the array’s size as arguments. The function should create a new array that is one element larger than the argument array. The first element of the new array should be set to 0. Element 0 of the argument array should be copied to element 1 of the new array, element 1 of the argument array should be copied to element 2 of the new array, and so forth. The function should return a pointer to the new array. Demonstrate the function by using it in a main program that reads an integer N (that is not more than 50) from standard input and then reads N integers from a file named data into an array. The program then passes the array to your element shifter function, and prints the values of the new expanded and shifted array on standard output, one value per line. You may assume that the file data has at least N values. Prompts And Output Labels. There are no prompts for the integer and no labels for the reversed array that…arrow_forwardUse C++ programing language Write a modular program that analyzes a year’s worth of rainfall data. In addition to main, the program should have a getData function that accepts the total rainfall for each of 12 months from the user and stores it in an array holding double numbers. It should also have four value-returning functions that compute and return to main the totalRainfall, averageRainfall, driestMonth, and wettestMonth. These last two functions return the number of the month with the lowest and highest rainfall amounts, not the amount of rain that fell those months. Notice that this month number can be used to obtain the amount of rain that fell those months. This information should be used either by main or by a displayReport function called by main to print a summary rainfall report similar to the following: 2019 Rain Report for Springdale County Total rainfall: 23.19 inches Average monthly rainfall: 1.93 inchesarrow_forward
- 5.12 LAB: User-Defined Functions: Adjust list by normalizing CORAL LANGUAGE ONLY PLEASE When analyzing data sets, such as data for human heights or for human weights, a common step is to adjust the data. This can be done by normalizing to values between 0 and 1, or throwing away outliers. Define a function named getMinimumInt that takes an integer array as a parameter and returns the smallest value. Then write a main program that reads five integers as input, stores the integers in an array, and calls getMinimumInt() with the array as an argument. The main program then outputs the normalized array by subtracting the returned smallest value from all the values in the array. Ex: If the input is: 30 50 10 70 65 function getMinimumInt() returns 10, and the program output is: 20 40 0 60 55 For coding simplicity, follow every output value by a space, even the last one. Your program should define and use a function:Function getMinimumInt(integer array(?) userVals) returns integer minInt…arrow_forwardin c++ In statistics, the mode of a set of values is the value that occurs most often or with the greatest frequency. Write a function that accepts as arguments the following: A) An array of integers B) An integer that indicates the number of elements in the array The function should determine the mode of the array. That is, it should determine which value in the array occurs most often. The mode is the value the function should return. If the array has no mode (none of the values occur more than once), the function should return −1. (Assume the array will always contain nonnegative values.) Demonstrate your pointer prowess by using pointer notation instead of array notation in this function.arrow_forwardC++ Visual 2019 Write a program that dynamically allocates an array large enough to hold a user-defined number of test scores. Once all the socres are entered, the array should be passed to a function that sorts them in ascending order. Another function should be called that calculates the average score. The program should display the sorted list of scores and averages with appropriate headings. Use pointer notation rather than array notation whenever possible. Input Validation: Do not accept negative numbers for test scores.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
1.1 Arrays in Data Structure | Declaration, Initialization, Memory representation; Author: Jenny's lectures CS/IT NET&JRF;https://www.youtube.com/watch?v=AT14lCXuMKI;License: Standard YouTube License, CC-BY
Definition of Array; Author: Neso Academy;https://www.youtube.com/watch?v=55l-aZ7_F24;License: Standard Youtube License