C and C++

Welcome to Dream.In.Code
	Getting C++ Help is Easy! Join 132,660 C++ Programmers for FREE! Get instant access to thousands of C++ experts, tutorials, code snippets, and more! There are 1,185 people online right now. Registration is fast and FREE... Join Now! Chat LIVE With a C++ Expert

Help with math operations

Help with math operations, Math operations over an array in C++

Options

bert	4 Sep, 2008 - 07:26 PM Post #1
New D.I.C Head Joined: 4 Sep, 2008 Posts: 3	Computer Whiz versus Math Genius! Christopher, a high school computer whiz kid, has been challenged by his cousin Thea, a math Genius, to compute for integers using the four basic arithmetic operations using a computer program. However, Thea, wanting his dear cousin to fail, deliberately increased the complexity on how it will be done. From her explanation, integers entered in the console by users should be temporarily stored into a variable and later copied to an array, digit by digit. She broadened the details by providing an illustration. Standard Addition Process Thea’s Addition Process Using Variables Using Arrays She then added that the arithmetic operations, except division, must be done digit by digit in the array, starting from its last element progressing to the first, just like the normal way. Christopher was startled! He never expected a challenge like this. As his buddy, your task is to help him design and implement an algorithm that will perform the four (4) basic arithmetic operations, namely: addition, subtraction, multiplication, and division. To follow good programming standard, you both decided to have four (4) user-defined functions to complement the said operations. Here are the function prototypes: void add(int a1[], int a2[]); void subtract(int a1[], int a2[]); void multiply(int a1[], int a2[]); void divide(int a1[], int a2[]); Christopher also added that for clarity, it is a must to define a void-type function display(int result[]) in main() to display the elements of any array passed to it. Sample Input/Output: Type 2 integers separated by a space: 123 59 [1] Add [2] Subtract [3] Multiply [4] Divide Please choose operation -> 1 123 + 59 is 182 Try Again? [y/n] -> y Type 2 integers separated by a space: 123 59 [1] Add [2] Subtract [3] Multiply [4] Divide Please choose operation -> 6 Error: Input not recognized! Try Again? [y/n] -> n Bye!
	This Post Was Helpful! ^New!


Register for Free to Make These Ads Go Away!

NickDMax	4 Sep, 2008 - 08:20 PM Post #2
2B\|\|!2B Joined: 18 Feb, 2007 Posts: 2,858 Thanked 47 times Dream Kudos: 550 My Contributions	To help you we need to see the code that you are trying to get working. The rules state that we can not just provide you with code you have to attempt the problem and then we can help you get your code working.
	This Post Was Helpful! ^New!

bert

4 Sep, 2008 - 08:25 PM

Post #3

New D.I.C Head

Joined: 4 Sep, 2008
Posts: 3

cpp


#include<iostream>
using namespace std;

void add(int a1[], int a2[])
{
    int sum;
    sum = a1[1] + a2[1];
    cout<< "The sum of the two integers is "<< sum <<endl;
    
}
void subtract(int a1[], int a2[])
{
    int difference;
    difference = a1[1] - a2[1];
    cout<< "The difference of the two integers is "<< difference <<endl;
    
}
void multiply(int a1[], int a2[])
{
    int product;
    product = a1[1] * a2[1];
    cout<< "The product of the two integers is "<< product <<endl;
    
}
void devide(int a1[], int a2[])
{
    int quotient;
    quotient = a1[1] / a2[1];
    cout<< "The quotient of the two integers is "<< quotient <<endl;
    
}
int main(void)
{
    int opt; 
    int num1[1], num2[1];
    char ch;
    do{
    cout<< "Enter two integers separated by a space: ";
    cin>> num1[1];
    cin>> num2[1];
    
    
                   add(num1, num2);
                  
                   
                   subtract(num1, num2);
                   
                   
                   
                   multiply(num1, num2);
                   
                   
                   
                   devide(num1, num2);
                   
                   
                   cout<< "Try again?[y/n]: ";
                   cin>> ch;
                   }while(ch != 'n');            
    
   
                   return 1;
                   }

This Post Was Helpful! ^New!

bert

4 Sep, 2008 - 08:26 PM

Post #4

New D.I.C Head

Joined: 4 Sep, 2008
Posts: 3

cpp


#include<iostream>
using namespace std;

void add(int a1[], int a2[])
{
    int sum;
    sum = a1[1] + a2[1];
    cout<< "The sum of the two integers is "<< sum <<endl;
    
}
void subtract(int a1[], int a2[])
{
    int difference;
    difference = a1[1] - a2[1];
    cout<< "The difference of the two integers is "<< difference <<endl;
    
}
void multiply(int a1[], int a2[])
{
    int product;
    product = a1[1] * a2[1];
    cout<< "The product of the two integers is "<< product <<endl;
    
}
void devide(int a1[], int a2[])
{
    int quotient;
    quotient = a1[1] / a2[1];
    cout<< "The quotient of the two integers is "<< quotient <<endl;
    
}
int main(void)
{
    int opt; 
    int num1[1], num2[1];
    char ch;
    do{
    cout<< "Enter two integers separated by a space: ";
    cin>> num1[1];
    cin>> num2[1];
    
    
                   add(num1, num2);
                  
                   
                   subtract(num1, num2);
                   
                   
                   
                   multiply(num1, num2);
                   
                   
                   
                   devide(num1, num2);
                   
                   
                   cout<< "Try again?[y/n]: ";
                   cin>> ch;
                   }while(ch != 'n');            
    
   
                   return 1;
                   }

Mod Edit: Please use code tags when posting your code. Code tags are used like so =>

Thanks,
PsychoCoder

This post has been edited by PsychoCoder: 4 Sep, 2008 - 08:33 PM

This Post Was Helpful! ^New!

PsychoCoder	4 Sep, 2008 - 08:34 PM Post #5
using DIC.Core; Joined: 26 Jul, 2007 Posts: 8,933 Thanked 118 times Dream Kudos: 8525 Expert In: VB, VB.Net, C#, SQL, ASP, ASP.Net, Web Development, HTML, CSS, Win32 API, Javascript, mySQL, J#, Boo.Net My Contributions	Are you receiving any errors? Does this code not work that way you intended it? When asking for help there are a couple items that are vital in order for someone to properly help you: Post the code you're having problems with Post the exact error you're receiving, if you are receiving one If no error explain what the code is doing versus what you want it to do Please don't start duplicate topics. Topics merged
	This Post Was Helpful! ^New!

joske	5 Sep, 2008 - 04:52 PM Post #6
D.I.C Head Joined: 4 Sep, 2007 Posts: 157 Thanked 11 times My Contributions	You have to change CODE cin>> num1[1]; cin>> num2[1]; into CODE cin>> num1[0]; cin>> num2[0]; as both num1 and num2 are arrays with one entry (you defined int num1[1], num2[1];), and array entries are zero based (you access the first element in an array by referring to index 0).
	This Post Was Helpful! ^New!

JackOfAllTrades	5 Sep, 2008 - 05:19 PM Post #7
D.I.C Addict Joined: 23 Aug, 2008 Posts: 508 Thanked 45 times Dream Kudos: 25 My Contributions	I'm not clear why num1 and num2 need to be arrays at all, actually.
	This Post Was Helpful! ^New!