Alright boys, need some C++ help

[Gr4vitas]

So essentially what I'm trying to do is output this pattern on the screen.

 

+

++

+++

++++

+++++

++++++

+++++++

++++++++

+++++++++

++++++++++

 

++++++++++

+++++++++

++++++++

+++++++

++++++

+++++

++++

+++

++

+

 

 

I'm having the hardest time understanding the logic behind getting this to output, all I've come up with is this.

#include <iostream>
#include <conio.h>

using namespace std;


const char space = '_';
const char draw = 'X';

int main()
{

int col, row, print;

print = 0;

for(row = 0; row<10; row++)
{
	for(col=0; col<10; col++)
	{
		if(print == col)
		{	
			cout << draw;
		}
		else 
		{
			cout << space;
		}
	}
	print++;
	cout << endl;
}





getchar();
}

 

Obviously this doesn't accomplish what I need to, I just cant figure it out and this is all I really come up with.

 

anyway if anyone has a method for this that'd be really cool.

 

by the way the above code outputs:

 

X_________

_X________

__X_______

___X______

____X_____

_____X____

______X___

_______X__

________X_

_________X

Edited October 22, 2009 by Gr4vitas

[CheeseMan42]

Try this out.

const char space = ' ';

int main()
{

int col, row, print;
char str[10];

print = 0;

for(row = 0; row<10; row++)
{
	strcpy( str, space );
	for(col=0; col<10; col++)
	{
		if(print <= col)
		{	
			strcat( str, draw );
		}
		else
		{
			strcat( str, space );
		}
	}
	print++;
	cout << str << endl;
}





getchar();
}

 

This should get you through the first half of the pattern, and I'll let you figure out the second half.

[Gr4vitas]

Try this out.

const char space = ' ';

int main()
{

int col, row, print;
char str[10];

print = 0;

for(row = 0; row<10; row++)
{
	strcpy( str, space );
	for(col=0; col<10; col++)
	{
		if(print <= col)
		{	
			strcat( str, draw );
		}
		else
		{
			strcat( str, space );
		}
	}
	print++;
	cout << str << endl;
}





getchar();
}

 

This should get you through the first half of the pattern, and I'll let you figure out the second half.

 

Thanks man! Really helped a lot! Just read your sig thanks for the quote haha!

 

EDIT:

 

It would appear that it won't build.

 

strcat cannot convert parameter 2 from 'char' to 'const char *'

Edited October 22, 2009 by Gr4vitas

[The Smith]

Why not just do something like:

 

for(i=1; i<11; i++){
  for(j=1; j<=i; j++) cout << "+";
  cout << endl;
}

Edited October 22, 2009 by The Smith

[Gr4vitas]

Why not just do something like:

 

for(i=1; i<11; i++){
  for(j=1; j<=i; j++) cout << "+";
  cout << endl;
}

 

Now how would I go about displaying that in reverse order?

[spectrascope]

think --;

[Gr4vitas]

think --;

 

I tried lmao

[RimX]

Now how would I go about displaying that in reverse order?

cout << endl;

for(i=11; i>0; i--){
  for(j=11; j>=i; j--) cout << "+";
  cout << endl;
}

 

that way

 

that should work I think.

[Gr4vitas]

cout << endl;

for(i=11; i>0; i--){
  for(j=11; j>=i; j--) cout << "+";
  cout << endl;
}

 

that way

 

that should work I think.

 

doesnt work

[CheeseMan42]

for(i=11; i>1; i--){
  for(j=1; j<=i; j++) cout << "+";
  cout << endl;
}

 

Might have to play with the bounds though.

[RimX]

public class test 
{
   public static void main(String[]args)
   {
   for(int i=1; i<11; i++)
   {
  		for(int j=1; j<=i; j++)
  		{
  			System.out.print("+");
  		}
  		System.out.println();
  	}
  	System.out.println();
  	for(int i=11; i>0; i--)
  	{
		for(int j=1; j<i; j++)
		{
			System.out.print("+");
  			}
   		System.out.println();
	}
}
}

in java

 

EDIT: the codebox cut off the last nested for statement

Edited October 22, 2009 by RimX

[spectrascope]

here its not pretty but it works

 

#include <iostream>

#include <conio.h>

 

int main()

{

 

int print, temp;

 

for(print = 0 ; print<10; print++)

{

 

if(print <= 10)

{

temp = print;

while(temp > -1)

{

printf("+");

temp=temp-1;

}

printf("\n");

}

}

printf("\n");

print = 9;

while(print > -1)

{

 

if(print >= -1)

{

temp = print;

while(temp > -1)

{

printf("+");

temp=temp-1;

}

printf("\n");

print--;

}

}

 

 

system("PAUSE");

}