C++ :: Write A Template That Accepts Argument And Returns Its Absolute Value
Nov 19, 2014
Write a template that accepts an argument and returns its absolute value. The absolute entered by the user, then return the total. The argument sent into the function should be the number of values the function is to read. Test the template in a simple driver program that sends values of various types as arguments and displays the results.
#include <iostream>
using namespace std;
template <class integertemplate>
integertemplate totalint (integertemplate integers) {
cout << "How many integer values do you wish to total? ";
cin >> integers;
How to go about making a function that accepts an integer and returns a string with any one of 5 strings containing the name of the object. For example object number 3 might be "Pen". Object 4 might be "Paper".
I'm getting a error on my Circle::Circle(double radiusValue) constructor. My instructions is 'Add a constructor that accepts one argument and uses it to set the radius.'
#include <iostream> #include <cmath> using namespace std; class Circle { private: double x; double y; double radius;
Error1error C2955: 'DoubleLinkedListInterface' : use of class template requires template argument listdoublelinkedlist.h10 Error2error C2244: 'DoubleLinkedList<T>::DoubleLinkedList' : unable to match function definition to an existing declaration doublelinkedlist.cpp7
Error3 .cpperror C2244: 'DoubleLinkedList<T>::~DoubleLinkedList' : unable to match function definition to an existing declaration 12
.h
#pragma once #include "DoubleLinkedListInterface.h" #include "Node.h" #include <iostream>
write a function accepts two arguments, an array of integers and a number indicating the number of elements in the array. the function should recursively calculate the sum of all the numbers in the array. Demonatrate the use of the functions in a program that asks the users to enter an array of numbers and prints it sum
i had done this but it wont work
#include <iostream> #include <conio.h> #include <iomanip> using namespace std;
Write a function that computes and returns the score for a permutation, i.e. the number of reversals required to make arr[0] == 1. HAVE TO USE FOLLOWING FORMAT:
Code: // POST: Returns the number of reversals needed to make arr[0] == 1 // if the reversal game were played on arr // Note: If arr[0] == 1 initially, then score(arr, n) returns 0 AND this is what i could muster; [code]....
I have an assignment which requires me to do the following:
Required to write a function that finds an integer in an array and returns its corresponding index. The function must be called findNumber. It must have FOUR parameters:
- The first parameter is the array to be searched - The second parameter is the integer to be found within the array - The third parameter is the size of the array - The fourth parameter is an integer that indicates whether the array is sorted. A value of 1 means the array is sorted; a value of zero means the array is not sorted.
Since a function can only return one value(To return the position of a required integer in an array in this instance) I have tried to make use of pointers to try and return a value stating whether the array is sorted or not.This is my code : (It compiles perfectly but it does not produce any outputs)
Code:
#include <stdio.h> #define SIZE 10 size_t findNumber(int *sort, const int array[],int key,size_t size); int main(void){ int a[SIZE]; size_t x;
I wonder if it is possible to remove the last argument in an argument pack? Below is an example on what I want to accomplish:
template<template<int...> class A,int... Ints> A<remove_last_int<Ints...>::list> func(const A<Ints...> & a0) { A<remove_last_int<Ints...>::list> a; ... //Here a set the members of a based on a0. ... return a; }
For example, I want the return a A<1,2> value from (const A<1,2,3> & a0)
Code: /data/data/com.n0n3m4.droidc/files/temp.c:92:3: error: invalid use of template-name 'Array' without an argument list Array::Array(int s): size(s) ^ compilation terminated due to -Wfatal-errors.
Code:
// headers #include <iostream> #include <utility> #include <cctype> // stuff we need from namespace std using std::cout; using std::cin;
Based on the arguments passed to foo, the compiler can deduct the type T. But on the other hand, when we use a class template, we always need to specify the type, for example,
Code: template<class T> struct sum { static void foo(T t1, T t2) { } }; sum<int>::foo(1,3);
Here we can't call sum::foo(1,3), otherwise we get compiler errors. My question is why the compiler can't deduct the type based on the arguments passed to foo? In addition, if we call function template foo like this,
Code: foo(1, '3');
Then we get compiler errors. We need to specify the type like foo<int>(1.'3'). Since '3' can be always treated as integer, why we need to specify the type here?
I have in the past written code for templated functions where one function argument can be either a function pointer or a Functor. Works pretty straightforward.
Now I am in a situation where I am actually trying to pass a function pointer as template argument to a class. Unfortunately this does not work, I can pass the Functor class but not the function pointer. Below code illustrates the issue:
The idea is to have the definition of the Record class simple and readable and have a maintainable way to add auto-conversion functions to the class. So the lines I commented out are the desirable way how I want my code to look. Unfortunately I could not come up with any way that was close to readable for solving this.
I have a .cpp file which I have to create a header file for. I started it but I have stuck and it is full of errors.
I have some tasks (see comments in the code):
Task 2: I have to write a template which defines min max operators on vectors, it must be a custom vector template. The main program only demonstrates that it creates a data structure which calls for min max operators.
Task 3: I need a special min max function which watches for any changes and it has to work lineally so it has to step along the elements of the vectors determining the min max values.
Names are std::string no more than 3 characters in length. What built in container or boost container is fastest at finding a name (Key) in it's container.
Finding a name. At the name will be a value double.
I need the most efficient at finding and finding/updating the value. Forget out inserts and deletes.
I am trying to open a file and print the contents of the file to the terminal window. It works when I put the file right in the directory with the Solution but not if the file is out on my desktop and I use the full path. Here is the code:
#include <iostream> #include <fstream> #include <string> using namespace std; int OpenFile(){ fstream SampleFile;
Here's the question: Create a program that accepts an array of characters. And displays the converted array of characters into Upper case if it is given in Lowercase and vice versa. Don't use string, but char.
Example: mychar ="I am A conQUeror." Code: //My Codes: #include <iostream> #include <conio.h> using namespace std; int main()
I want to create a proper visible table with boundaries that contains boxes and each box receives a value .I don't know where to start from.i have an idea of using matrix for entering values in each box of table,but how to create lines and boundaries ?
I was trying to code a program that accepts your first name and then last name and then displays it through another function. I have checked that the assignments are between similar type of variables and pointers, but I don't seem to get it right.
When first input is taken and then second one, the first one's value changes to same as the second. E.G if first name is L and second name is S and after second input both variables, first and sec, become equal to S. Why?
I built a program that accepts two input from the user, using a array inside a loop, it is pass to a function inside a class which will display the two number, the problem is when the user is inputting a number and it is 1 the program continuously as the user to input a number, and when 2 is entered the program ask another number and end, but for example you entered 2 and 3. . . it will then outpu 2 and 4 (so 3 + 1 ) and always the last number is plus one. here is the code.
main.cpp #include <iostream> #include "newclass.h" using namespace std;
I have a N queens (actually 8 queens to be specific) program that accepts the numbers in order by row. I need to get it so it accepts the numbers in order by column. At first glance I thought it was just one space different, but it turned out not to be and how to get the one space difference in there. My current code (which I'm aware isn't doing the column accepting right) is:
Code:
#include <iostream> using namespace std; int main() { int board[8]; cout << "Enter the columns containing queens, in order by column: "; for(int i = 0; i < 8; ++i) { cin >> board[i];
[Code]...
What the output should be:
Code:
Enter the rows containing queens, in order by column:
i want to display the grade report of two students in the table but this code will repeat the grade report of one student in the tables and what is wrong with this code below ?
#include<iostream> #include<string> #include<fstream> using namespace std;
You pros are once newbies like us. Hoped you might take a little time sharing your expertise. Got freaked out when our teacher gave us this activity, where she haven't taught this to us yet. So this is the activity (LOOPING) :
Write a program that accepts a positive integer. The program should be the same from the given output. Use do while to allow the user to continue or not.
OUTPUT must be:
n = 5 0 1==0 2==1==0 3==2==1==0 4==3==2==1==0 5==4==3==2==1==0
if n = 6 0 1==0 2==1==0 3==2==1==0 4==3==2==1==0 5==4==3==2==1==0 6==5==4==3==2==1==0
