I did not understand this c++ code, please help me solve my confusion. In the first void function, we can enter a number for *input, but why in the second void function use *val to calculated the value I entered for the first void function. I think one is *input, and the second one is *val. #include using namespace std; void getNumber(int *input); void doubleValue(int *val); int main() { int number; getNumber(&number); doubleValue(&number); cout<<"That value doubled is"<>*input; } void doubleValue(int *val) { *val *=2;

I did not understand this c++ code, please help me solve my confusion. In the first void function, we can enter a number for input, but why in the second void function use val to calculated the value I entered for the first void function. I think one is input, and the second one is val. #include using namespace std; void getNumber(int input); void doubleValue(int val); int main() { int number; getNumber(&number); doubleValue(&number); cout<<"That value doubled is"<>input; } void doubleValue(int val) { val =2;

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter6: User-defined Functions

Section: Chapter Questions

Problem 1TF: Mark the following statements as true or false: a. To use a predefined function in a program, you...

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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)
Code using c++ 3. From Person to People by CodeChum Admin Now that we have created a Person, it's time to create more Person and this tech universe shall be filled with people! Instructions: In the code editor, you are provided with the definition of a struct Person. This struct needs an integer value for its age and character value for its gender. Furthermore, you are provided with a displayPerson() function which accepts a struct Person as its parameter. In the main() function, there's a pre-created array of 5 Persons. Your task is to ask the user for the values of the age and gender of these Persons. Then, once you've set their ages and genders, call the displayPerson() function and pass them one by one. Input 1. A series of ages and genders of the 5 Persons Output Person·#1 Enter·Person's·age:·24 Enter·Person's·gender:·M Person·#2 Enter·Person's·age:·21 Enter·Person's·gender:·F Person·#3 Enter·Person's·age:·22 Enter·Person's·gender:·F Person·#4…
You might be wondering why you'd want to utilise a return statement in a void function.
I wish to write a program to keep track of my coat hanger collection, I need a data structure for recording the following information for each hanger: the hanger type (string), the date of acquisition (int), and the value (double). I own less than 500 coat hangers. Write the declarations for an array of struct to contain the information. Please write only the declarations; do not write any functions. C++
Why would you want to use a return statement in a void function, you may wonder.
In a void function, how would you utilise a return statement?
C++ programming question: Suppose we have just discovered an alien planet (we will call it Mars), and on this planet one year is divided into 15 months and each month consists of 30 days. i. Write the code for a struct charontime to hold years, months, and days for time on Charon -all ints. ii. Write a function that takes an int parameter that represents the number of Charon days, converts it to years, months, and days on Charon and returns this information in a struct charontime. So for example it will convert 800 days into a struct that represents 1 year, 11 months, and 20 days. iii. Write a function that takes a struct charontime parameter and returns the total number of Charon days represented by the struct. iv. Write a function that takes a filename and an array of struct charontime, opens the file, reads each line as the number of Charon days, converts this to a struct charontime and stores this in the array. (you don't need to create an actual file with number of days in it...…
C++ programming question: Suppose we have just discovered an alien planet (we will call it Mars), and on this planet one year is divided into 15 months and each month consists of 30 days. i. Write the code for a struct charontime to hold years, months, and days for time on Charon -all ints. ii. Write a function that takes an int parameter that represents the number of Charon days, converts it to years, months, and days on Charon and returns this information in a struct charontime. So for example it will convert 800 days into a struct that represents 1 year, 11 months, and 20 days. iii. Write a function that takes a struct charontime parameter and returns the total number of Charon days represented by the struct. iv. write a function to sort an array in descending order based on the number of charon days. write a comparison and swap function you will use
Classwork Requirements: Developa program in C++ that: Reads as many test scores as the user wants from the keyboard (assuming at most 50scores). Test scores should be whole numbers. You must validate user input; only positive numbers are valid. Prints the scores in original order sorted from high to low the highest score the lowest score the average of the scores Implement the following functions using the given function prototypes: void displayArray(int array[], int size)- Displays the content of the array void selectionSort(int array[], int size)- sorts the array using the selection sort algorithm in descending Hint: refer to example 8-5 in the textbook. int findMax(int array[], int size)- finds and returns the highest element of the array int findMin(int array[], int size)- finds and returns the lowest element of the array double findAvg(int array[], int size)- finds and returns the average of the elements of the array
Hello I'm working on C++. I'm not really sure how to add arrays and what to add in void getGrades. Program Requirements: Use two arrays of doubles for the grades. Use a global constant for the max size of the arrays Use a void function called GetGrades that accepts a single argument (one array) and prompts the user for grades to enter. Use a boolean function called GradesAreSame that accepts two arguments (both arrays) as constant parameters. It should return true if both arrays are the same and false if the arrays are different.
C++ Programming problem: Write a program, using a void function, that takes as input an integer and outputs two times the number if it is even; otherwise it outputs five times the number. Then, using a void function, write a program that takes as input two integer values, say n and m. The function returns the sum and average of all the numbers between n and m (inclusive).
C++ Programming: I need help writing a void function that prints sales per product per period using 3 for loops. Please see my code below ... not sure how to write the function. But this is what I've got so far. Please leave main alone. What the output should look like is posted below the code. Thanks :) #include <iostream>#include <string>#include <iomanip> using namespace std; int const LOCATION_DIM_SZ = 2;int const TIME_DIM_SZ = 2;int const PRODUCT_DIM_SIZE = 3; string Location[] = { "FL", "TX" };string Period[] = { "Jan", "FEB" };string Product[] = { "iPhone","iPad","MacBookPro" }; /*1*/ void printSalesPerProductPerPeriod(double sales[LOCATION_DIM_SZ][TIME_DIM_SZ][PRODUCT_DIM_SIZE]) { int i(0), j(0), k(0);double salesPerProductPerPeriod = 0; cout << "Total Sales per Product per Period" << endl;cout << "====================================" << endl;for (i = 0; i < 3; i++) {for (j = 0; j < 2; j++) {salesPerProductPerPeriod = 0;for (k =…