Building a Triangle

[Brianzor]

I'm trying to build a triangle for a program but I can't seem to get it built the way I want. I feel that I have part of my code right, but something definitely needs to be added. Here is my code:

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

int main(void)
{
    auto    int    rows;
    auto    int    index;
    auto    char   stick = '|';
   
    cout << "Enter rows: ";
    cin >> rows;

    for (index = 0; rows > index; ++index)
        {
        cout << index + 1 << setw((rows - 1) * 2)
             << stick << endl;
        }
    return 0;
}

Here is a link for output.

http://img.photobucket.com/albums/v641/Brianzor/testing.jpg?t=1289621766

Any help would be appreciated.

Thanks,
Brian

Edit: Not looking for answers, just a hint or push.

[qtpan]

one loop won't suffice,it must be nested,the counter of the first loop("index") will be use in your second loop.

for(index=0;index<(rows*2);index+=2)
     {
         for()
               {
               }
          for(x=0;x<index;x++)
               {
               }
           std::cout<<std::endl;
     }

i didn't tried this code but i know this is how it supposed to be when i coded it before,

[Brianzor]

I'm having quite a difficult time trying to interpret the code you've just given, especially since you said you haven't tried it yourself. I've looked into nested for loops but can't seem to figure them out.

[Brianzor]

Bump.

[LittleQuick]

Look for different types of loops, I am not very familiar with them, but I don't think For is the correct loop to use. Look at Do-Whiles, Whiles, and such... but that's just my inexperienced suggestion.

[HooklessFastener]

HInt : look up setw and setfill in the search box above.

This is a great site not only for it's forums, but also for it's reference section. They have great example code that you can try.

[Brianzor]

Thank you for all the help guys, but I still can't seem to figure it out. I either output nothing or garbage. I think I'm ready for a solid answer on how to do this.

[HooklessFastener]

#include <iostream>
#include <iomanip>

using namespace std;

//Declare your variables.
int i;          //Loop iterator.
char stick='|'; //Stick character
int rows;       //Number of rows.

int main()
{

    cout << "Enter Rows: ";
    cin >> rows;

    for (i=1; i<=rows; i++) //Start rows.
    {
        cout << i;  //Print row number.
        //Print a field of spaces equal to the number of rows minus half the width of the triangle, plus 2 spaces
        //between the row number and the triangle,
        cout << setfill (' ') << setw(rows-i+2) << " ";
        //Print a field of pipes equal to the number of row number*2 then subtract 1 to keep the width odd and centered.
        cout << setfill ('|') << setw((i*2-1)) <<"|";
        cout << "\n\n";  //Print carriage return.
    }


return 0;
}

[Brianzor]

Thanks for your help there HooklessFastener but I found out today that using only for loops would make my project way harder, so a friend suggested arrays.

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

void SetArray(int Array[], const int numRows);
void DisplayArray(int Array[], int numCols, const int numRows);
int main(void)
{
    auto    int     numRows;
    auto    int     numCols;

    cout << "Enter # of rows: ";
    cin >> numRows;

    auto    int     Array[numRows];

    SetArray(Array, numRows);
    numCols = numRows * 2 - 1;
    DisplayArray(Array, numCols, numRows);

    return 0;
}
void SetArray(int Array[], const int numRows)
{
    auto    int     index;

    for(index = numRows - 1; index >= 0; --index)
        {
        Array[index] = ((index + 1) * 2) - 1;
        }
}
void DisplayArray(int Array[], int numCols, const int numRows)
{
    auto    int     row;
    auto    int     col;
    auto    int     lower = numRows;
    auto    int     upper;

I've gotten this so far but I've hit a wall and have been trying to get it to display. (Arrays were never really my strong point) Can anyone shed a little light onto the situation?