Mathematical Table Using Squared, Cubed, Square-root, and Cubed Root

[Jackerman23]

I have to create a table exactly like the one in the attachment using squared, cubed, square-root, and cube root. I am having a hard time creating the code and been struggling for hours, can anyone point me towards the right direction or have the code do this? thanks

 

[Eric Veteran]

What have you got so far that's not working?

[Praetor]

Language? what have you done and where are you stuck?

[Jackerman23]

I am pretty new at this but this is all I got so far:

 

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

int main()
{

    double x = 0;
    double rows = 0;
    double squared = 0;
    double cubed = 0;
    double squareRoot = 0;
    double cubeRoot = 0;
    int ceiling = 0;
    int floor = 0;

    cout << "Where would you like to start? ";
    cin >> x;
    cout << endl;

    cout << "And how many rows? ";
    cin >> rows;
    cout << endl;

    cout << " x sqrt(x) x^2\n\n x^3\n";

    squared = x*x;
    cubed = x*x*x;
    squareRoot = sqrt (x);
    cubeRoot = pow(x), 1/3;


    return 0;
}

[Jackerman23]

here is my updated one, I can't get it to stop looping. I want it to stop at the number of rows when the user enters it

 

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

int main()
{

    double number = 0;
    double rows = 0;
    double squared = 0;
    double cubed = 0;
    double squareRoot = 0;
    double cubeRoot = 0;
    int ceiling = 0;
    int floor = 0;

    cout << "Where would you like to start? ";
    cin >> number;
    cout << endl;

    cout << "And how many rows? ";
    cin >> rows;
    cout << endl;
        

    squared = number*number;
    cubed = number*number*number;
    squareRoot = sqrt (number);
    cubeRoot = pow((double)(number),(double)1/3);

    do
    {
    cout << number << "  " << squared << "  " << cubed << "  " << squareRoot << "  " << cubeRoot << "  " << ceiling << "  " << floor << "  " << endl;
    number++, squared++, cubed++, squareRoot++, cubeRoot++, ceiling++, floor++;
    }
    while (number > 0);


    return 0;
}

[Lord Method Man]

Well obviously it isn't going to stop since you increment 'number' inside the loop and have 'while (number < 0)' as your condition. The instructions say use a for-loop, so use a for-loop.

 

http://code.wikia.com/wiki/For_loop

[Jackerman23]

okay I stopped it from looping but is there any suggestions you would suggest for me to revise my code to make it look like the table in the attachment?

 

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

int main()
{

    double number = 0;
    double rows = 0;
    double squared = 0;
    double cubed = 0;
    double squareRoot = 0;
    double cubeRoot = 0;
    int ceiling = 0;
    int floor = 0;

    cout << "Where would you like to start? ";
    cin >> number;
    cout << endl;

    cout << "And how many rows? ";
    cin >> rows;
    cout << endl;
        

    squared = number*number;
    cubed = number*number*number;
    squareRoot = sqrt (number);
    cubeRoot = pow((double)(number),(double)1/3);

    do
    {
    cout << number << "  " << squared << "  " << cubed << "  " << squareRoot << "  " << cubeRoot << "  " << ceiling << "  " << floor << "  " << endl;
    ++number, ++squared, ++cubed, ++squareRoot, ++cubeRoot, ++ceiling, ++floor;
    break;
    }
    while (number > 0);


    return 0;
}

[Eric Veteran]

do
     {
     cout << number << "  " << squared << "  " << cubed << "  " << squareRoot << "  " << cubeRoot << "  " << ceiling << "  " << floor << "  " << endl;
     ++number, ++squared, ++cubed, ++squareRoot, ++cubeRoot, ++ceiling, ++floor;
     [b]break;[/b]
     }
     while (number > 0);

You don't want that (the break) there. It will exit the do...while loop immediately after the first line of output.

Also, the way you've written it you should be decrementing "number" rather than incrementing it, or you could create a second count variable and increment it until it reaches the target number. As it stands it will fail because "number" your starting calculation number so you *should* be using "rows" in the do loop test instead of "number". :)

EDIT: Ugh, sorry, misread. You want to test against rows, but obviously will want to continue incrementing number.

[Jackerman23]

okay I just revised this and removed the break, so do you got any suggestions how to revise my code from looping and make my table to look exactly like the one in the attachment?

 

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

int main()
{

    double number = 0;
    double rows = 0;
    double squared = 0;
    double cubed = 0;
    double squareRoot = 0;
    double cubeRoot = 0;
    int ceiling = 0;
    int floor = 0;

    while (number <= 0)
    {

    cout << "Where would you like to start? ";
    cin >> number;
    cout << endl;
    }

    cout << "And how many rows? ";
    cin >> rows;
    cout << endl;


    squared = number*number;
    cubed = number*number*number;
    squareRoot = sqrt (number);
    cubeRoot = pow((double)(number),(double)1/3);

    do
    {
    cout << number << setw(5) << squared << setw(5) << cubed << setw(5) << squareRoot << setw(5) << cubeRoot << setw(5) << ceiling << setw(5) << floor << setw(5);
    ++number, ++squared, ++cubed, ++squareRoot, ++cubeRoot, ++ceiling, ++floor;
    }
    while (number > 0);


    return 0;
}

[Eric Veteran]

You could use tabs instead of spaces. I think it's "\t" in C?

You still need to fix your while statement, too. Unless you enter a negative starting number it will always be greater than zero. Plus, you're outputting your rows in the loop so you need to be testing against that variable.

for (int rowCount = 0; rowCount < rows; rowCount++)

{

...code...

}

[Jackerman23]

is that the correct place where I place the " (int rowCount = 0; rowCount < rows; rowCount++) " ? I placed it before the "do", but it still loops

 

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

int main()
{

    double number = 0;
    double rows = 0;
    double squared = 0;
    double cubed = 0;
    double squareRoot = 0;
    double cubeRoot = 0;
    int ceiling = 0;
    int floor = 0;


    {

    cout << "Where would you like to start? ";
    cin >> number;
    cout << endl;
    }

    cout << "And how many rows? ";
    cin >> rows;
    cout << endl;


    squared = number*number;
    cubed = number*number*number;
    squareRoot = sqrt (number);
    cubeRoot = pow((double)(number),(double)1/3);

    for (int rowCount = 0; rowCount < rows; rowCount++)

    do
    {
    cout << number << setw(5) << squared << setw(5) << cubed << setw(5) << squareRoot << setw(5) << cubeRoot << setw(5) << ceiling << setw(5) << floor << setw(5);
    ++number, ++squared, ++cubed, ++squareRoot, ++cubeRoot, ++ceiling, ++floor;

    }
    while (number > 0);


    return 0;
}

[Eric Veteran]

No, it should replace the do...while construct. The assignment you posted said to use a for... loop.

     for (int rowCount = 0; rowCount < rows; rowCount++)
     {
     cout << number << setw(5) << squared << setw(5) << cubed << setw(5) << squareRoot << setw(5) << cubeRoot << setw(5) << ceiling << setw(5) << floor << setw(5);
     ++number, ++squared, ++cubed, ++squareRoot, ++cubeRoot, ++ceiling, ++floor;

     }
  

     return 0;
 }

[Jackerman23]

thank you for helping to make the program to stop the loop but my values still display diagonally and not evenly line up like a regular table should. it looks really random and values are located everywhere:

 

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

int main()
{

    double number = 0;
    double rows = 0;
    double squared = 0;
    double cubed = 0;
    double squareRoot = 0;
    double cubeRoot = 0;
    int ceiling = 0;
    int floor = 0;


    {

    cout << "Where would you like to start? ";
    cin >> number;
    cout << endl;
    }

    cout << "And how many rows? ";
    cin >> rows;
    cout << endl;


    squared = number*number;
    cubed = pow(number, 3.0);
    squareRoot = sqrt (number);
    cubeRoot = pow(number, 1/3);

    for (int rowCount = 0; rowCount < rows; rowCount++)
     {
     cout << number << setw(5) << squared << setw(5) << cubed << setw(5) << squareRoot << setw(5) << cubeRoot << setw(5) << ceiling << setw(5) << floor << setw(5);
     ++number, ++squared, ++cubed, ++squareRoot, ++cubeRoot, ++ceiling, ++floor;

     }
 

     return 0;
 }
 

[Jackerman23]

I tried adding the the titles for my table but they still look very uneven looking:

 

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;

int main()
{

    double number = 0;
    double rows = 0;
    double squared = 0;
    double cubed = 0;
    double squareRoot = 0;
    double cubeRoot = 0;
    int ceiling = 0;
    int floor = 0;


    {

    cout << "Where would you like to start? ";
    cin >> number;
    cout << endl;
    }

    cout << "And how many rows? ";
    cin >> rows;
    cout << endl;


    squared = number*number;
    cubed = pow(number, 3.0);
    squareRoot = sqrt (number);
    cubeRoot = pow(number, 1/3);

    cout << "Number" << setw(6) << "Squared" << setw(6) << "Cubed" << setw(6) << "SquareRoot" << setw(6) << "CubeRoot" << setw(6) << "Ceiling" << setw(6) << "Floor" << setw(6);

    for (int rowCount = 0; rowCount < rows; rowCount++)
    {
     cout << number << setw(6) << squared << setw(6) << cubed << setw(6) << squareRoot << setw(6) << cubeRoot << setw(6) << ceiling << setw(6) << floor << setw(6);
     ++number, ++squared, ++cubed, ++squareRoot, ++cubeRoot, ++ceiling, ++floor;

     }
 

     return 0;
 }
 

[PUC_Snakeman]

How about you worry about logic first.

 

You need a for loop, right?

You don't even need to be storing them into variables.

This whole thing could be real simple.

 

Your only inputs come from the user, and there are only 2.

So.... the pseudocode logic then becomes:

 

// Get starting point n (double)

// Get number of rows (integer)

// Print header

// For each row, print the set of values for the row of data, incrementing n by 0.1 in the process

 

Your for-loop would then look like:

    for (int intRow = 0; intRow < intRows; intRow++)
    {

         // Output formatted n

         cout << n

 

         // Output formatted squared

         cout << n*n

 

         // Output formatted cubed

         cout << n*n*n

 

         // etc...

 

         // increment n by 0.1

         n += 0.1

     }

 

The point of the exercise is to understand the LOGIC, not to worry a ton about the formatting.

Does the LOGIC make more sense to you?