Thread: Square ints, setw problem(not too hard ;))

Still working thru Accelerated C++, I've got yet another problem. To solve more problems it would be benifital if I just had the answer as it would help me much more than explaining it and then letting me figure it out.

What I'm trying to do is fairly easy but a few simple niggles are getting in the way. So if someone could complete the following exercise it would be greatly apreciated. This is what I'm trying to do:

Write a program to calculate the squares of int values up to 100. The program should write two colmns: The first lists the value; the second contains the square of that value. Use setw to manage the output so that the values line up in column.

Thanks for the help. I hate asking for solutions to my problems. Someday I want to be someone that helps people like me on this forum.

I'd rather somebody do it themself.

Main problem is that I don't know how to use setw and setting up the vectors,how to identify each one.

Sorry if I'm being a bother.

I would write the program but I don't have the time. Try looking at this tutorial and if you still can't figure it out, I will post the source for the program you want.

http://cprogramming.com/tutorial/iomanip.html

For finding the square of every number less than or equal to 100 you will need a loop. Probably something like

Code:

int main()
{
int x;
x = 0;
while (x =< 100)
{
square root algorithms
x++;
}
return 0;
}

or you could use a for loop, either one will work

I hope this helps.

Gave it a go and here's what I got:

Code:

#include<iostream>
#include<vector>

using namespace std;

int main();
{
    vector<int> list;
    int number=0;
    vector<int>::iterator beg=list.begin();
    list.end()=100;//not sure if this will work or if I say that the end if when when size=100, 100 elements
    while(iter!=list.end()){
                            number++;
                            list.push_back(number);
                            cout<<number<<endl;
                            //setw stuff goes here
                            cout<<number*number;
    }else
        ++iter;
    }

Problems are, not sure how to use setw,or should I use something else. If so what? Other than that am I writing to the vector elements properly?

Salem is right(not like I even needed to say that as he is always right, lol), you really don't need vectors for a problem like this. In fact if you don't fully understand vectors than I wouldn't try using them....Just a simple loop will do it...

Code:

int main()
{
    int x;
    int square;
    x = 0;
    while (x <= 100) //Keeps looping until it hits 100
    {
          square = x * x;  //Squares whatever value x is
          cout << "The square of " << x << " is " << square << endl; // Outputs the numbers
          x++;
    } 
cin.get(); // Waits for you to press something
}

You don't even really need setw for the program I just wrote but if you want to I still suggest figuring out setw and setprecision.
"SETW" tutorial >>>>>>>> http://cprogramming.com/tutorial/iomanip.html

Originally Posted by Mitsukai

what do they mean with square? the square root? n^n+1 or n * n?

n * n