STARTING OUT W/C++,...(LL)-W/ACCESS
9th Edition
ISBN: 9780134596174
Author: GADDIS
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 9.5, Problem 9.8CP
Is each of the following definitions valid or invalid? If any is invalid, why?
A) int ivar;
int *iptr = &ivar;
B) int ivar, *iptr = &ivar;
C) float fvar;
int *iptr = &fvar;
D) int nums[50], *iptr = nums;
E) int *iptr = &ivar;
int ivar;
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
#include <stdio.h>void cubeByReference( int *nPtr ); // function prototypeint main( void ){ int number = 5; // initialize number printf("The original value of number is %d", number ); // pass address of number to cubeByReference cubeByReference( &number ); printf("\nThe new value of number is %d\n", number );} // end main
void cubeByReference( int *nPtr ){ *nPtr = *nPtr* *nPtr* *nPtr;}
passing argument by reference -
We modify the code above
1- define a second argument (example "int number2 = 9") and a pointer to it
2- define a second function (addByReference) that adds number2 to number - passing both arguments by reference
3- print-out the result (that is in number)
Upload the output and .c code
please typed
Let the function fun be defined as: int fun(int* k) { *k += 6; return 4 * (*k); } Suppose fun is used in a program as follows: void main() { int i = 10, j = 20, sum1, sum2; sum1 = (i / 2) + fun(&i); sum2 = fun(&j) + (j / 2); } Question: What are the values of sum1 and sum2 if a) operands in the expressions are evaluated left to right? b) operands in the expressions are evaluated right to left?
1 - Nuclear Power Plant (python)
The nuclear powerplant at Threeyedfish will automatically run a program to print a warning message when the reactor core becomes unstable. The warning message reads:
NUCLEAR CORE UNSTABLE!!! Quarantine is in effect. Surrounding hamlets will be evacuated. Anti-radiationsuits and iodine pills are mandatory.
Since the message contains crucial information, it should be printed three times. To do this, write a function that prints this message. This function has to be used three times.
Chapter 9 Solutions
STARTING OUT W/C++,...(LL)-W/ACCESS
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
Write a loop equivalent to the for loop above without using .
C Programming Language
What is the general problem with static scoping?
Concepts Of Programming Languages
This operator performs integer division. a. // b. % c. d. /
Starting Out with Python (4th Edition)
Refer to your answer to Checkpoint 14.35. In what package are the three classes?
Starting Out with Java: Early Objects (6th Edition)
(Arithmetic, Largest Value and Smallest Value) Write a program that inputs three different integers from the ke...
C How to Program (8th Edition)
Using examples, illustrate the different types of adaptor needed to support sequential composition, hierarchica...
Software Engineering (10th Edition)
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
- void getChar(char& c, istream& infile, int& i){ infile.get(c); if (c == '\n') i++;} COULD YOU REWRITTE THE FUNCTION ABOVE. AND BY REWRITE. I MEAN CHANGE THE FUNCTION NAME, PARAMETERS, AND ITS IMPLEMENTATION. HOWEVER, THE FUNCTION MUST STILL ACHEIVE THE SAME GOAL.arrow_forwardExplain following code segment:int [] a = new int [3];int [] b = new int [3];a = b;arrow_forwardQuestion 1 is already done need help with the others though This is the C code I have so far #include <stdio.h> #include <stdlib.h> struct employees { char name[20]; int ssn[9]; int yearBorn, salary; }; struct employees **emps = new employees()[10]; //Added new statement ---- bartleby // function to read the employee data from the user void readEmployee(struct employees *emp) { printf("Enter name: "); gets(emp->name); printf("Enter ssn: "); for(int i =0; i <9; i++) scanf("%d", &emp->ssn[i]); printf("Enter birth year: "); scanf("%d", &emp->yearBorn); printf("Enter salary: "); scanf("%d", &emp->salary); } // function to create a pointer of employee type struct employees *createEmployee() { // creating the pointer struct employees *emp = malloc(sizeof(struct employees)); // function to read the data readEmployee(emp); // returning the data return emp; } // function to…arrow_forward
- c++ the following function header is for a function thattakes two pointers to double-precision, floatingpoint numbers x and y as parameters and does notreturn a value.void exchange( double *x, double y ) Select one: True Falsearrow_forwardComplete the program 'Bcast-Reduce-Assignment.c' (Refer to 'Bcast-Reduce-Example.c') to make the program have the output as follows if we run the program using 2 processes. The input sequence is: 0 1 2 3 The output sequence is: 0 2 6 12 The code below must be used, please #include <stdio.h>#include <stdlib.h>#include <mpi.h> int main(void) { int my_rank, comm_sz; int i; int Count = 4; int Number[4]; int Result[4]; MPI_Init(NULL, NULL); MPI_Comm_size(MPI_COMM_WORLD, &comm_sz); MPI_Comm_rank(MPI_COMM_WORLD, &my_rank); if(my_rank == 0) { printf("The input sequence is: \n"); for (i = 0; i < Count; i++) { Number[i] = i; printf("%d ", Number[i]); } printf("\n"); } // Process 0 sends data to all of the processes MPI_Bcast(Number, Count, MPI_INT, 0, MPI_COMM_WORLD); for (i = 0; i < Count; i++)…arrow_forwardWrite java overloaded function calculate() with following function definitions.void calculate(int x, int y ) – to calculate the sum of all even numbers from xtill y and print the sum .void calculate(char a,char n) – to print all vowels from variable a to n if anyvoid calculate(int x, int y, int z) – to print the middle number from x,y,z ifyou arrange them in ascending order.arrow_forward
- Consider the function definition: void GetNums(int howMany, float& alpha, float& beta) { int i; beta = 0; for (i = 0; i < howMany; i++) { beta = alpha + beta; } } Describe what happens in MEMORY when the GetNums function is called.arrow_forwardWrite a function using the following header:void printChars(char ch1, char ch2, int numberPerLine)This function prints the characters between ch1 and ch2 inclusive with the specified number of characters perline (numberPerLine). Assume ch1 and ch2 are both either uppercase or lowercase letters.Write a test program that reads two characters and the number of characters per line, uses printChars toprint the characters (pass the smaller one as the first character) with the required format. Characters areseparated by exactly one space.Enter first character: BEnter second character: HEnter number per line: 3The characters are:B C DE F GHarrow_forwardWrite a function using the following header:void printChars(char ch1, char ch2, int numberPerLine)This function prints the characters between ch1 and ch2 inclusive with the specified number of characters perline (numberPerLine). Assume ch1 and ch2 are both either uppercase or lowercase letters.Write a test program that reads two characters and the number of characters per line, uses printChars toprint the characters (pass the smaller one as the first character) with the required format. Characters areseparated by exactly one spacearrow_forward
- Please help me explain the following void function c++ code, which I did not understand. Especially for the first void function and int main(), I do not understand why the first void function enter the number and the int main function print out the final answer. #include <iostream>using namespace std; void getNumber(int *input); void doubleValue(int *val); int main(){ int number; getNumber(&number); doubleValue(&number); cout<<"That value doubled is"<<number<<endl; return 0;}void getNumber(int *input){ cout<<"Enter an integer number:"; cin>>*input; }void doubleValue(int *val){ *val *=2;}arrow_forwardConsider the following recursive function. What does it calculate in terms of x, y, and z? 01: Private Function CalcRecurse(ByVal x As Integer, ByVal y As Integer, ByVal z As Integer) As Integer 02: If x <= 1 Then 'Assume that CalcRecurse always starts with x > 1 03: Return y 04: Else 05: Return z + CalcRecurse(x - 1, y, z) 06: End If 07: End Functionarrow_forwardThis is the C code I have so far #include <stdio.h> #include <stdlib.h> struct employees { char name[20]; int ssn[9]; int yearBorn, salary; }; struct employees **emps = new employees()[10]; //Added new statement ---- bartleby // function to read the employee data from the user void readEmployee(struct employees *emp) { printf("Enter name: "); gets(emp->name); printf("Enter ssn: "); for(int i =0; i <9; i++) scanf("%d", &emp->ssn[i]); printf("Enter birth year: "); scanf("%d", &emp->yearBorn); printf("Enter salary: "); scanf("%d", &emp->salary); } // function to create a pointer of employee type struct employees *createEmployee() { // creating the pointer struct employees *emp = malloc(sizeof(struct employees)); // function to read the data readEmployee(emp); // returning the data return emp; } // function to print the employee data to console void display(struct employees…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
What Are Data Types?; Author: Jabrils;https://www.youtube.com/watch?v=A37-3lflh8I;License: Standard YouTube License, CC-BY
Data Types; Author: CS50;https://www.youtube.com/watch?v=Fc9htmvVZ9U;License: Standard Youtube License