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I am new to C++ and have a problem in a class I am taking.I am having trouble trying to create this the way my professor wants. this is what is required from the program:
Write a complete program that prints out a “tree” of asterisks with the number of lines specified by the user.
The following output is a five-line tree:
1 *
2 ***
3 *****
4 *******
5 *********

I have this as the loop;

for (i = 1; i <= lines; i++)
	{
	for (l = 1;l <= i; l++) // prints line number
	cout <<l;
	for(j = 1; j <= i; j++)  // calculation to print start
	cout <<"*";
	cout<<endl;
	}

It prints this
1
2
3
4
5
*
1
2
3
4
5
**
etc.. My question is can some one point me in the direction to get the loop to output like the first example.

Thanks

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Last Post by Docbyte
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you need to combine this into two loop statements. try (i haven't tested this)

cout <<1 << "*";

in the second loop from the top

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you need to combine this into two loop statements. try (i haven't tested this)

cout <<1 << "*";

in the second loop from the top

Thanks for quick reply
I made this mod and received this out out;
1*
1*1*2*2*
.
.
1*1*1*1*1*2*2*.....5*5*5*5*5*

If I break the loops apart, Execute 1 or the other only the output is this;
first for statement;
1
2
3
4
5

or for the second for statement;
*
**
***
*****
******
But when put back in nest they dont work.

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sorry about that, only glancing at the code. For a start to make it easier to read , create variables with meaningful names it makes it easer to see what you are doing

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sorry about that, only glancing at the code. For a start to make it easier to read , create variables with meaningful names it makes it easer to see what you are doing

This is not the complete set of code only the nested loop. I used "l" to represent lines and for the * I used j guess I could have used an "a" for Asterisk or "s" for splat. I tend to try and use meaningfull names but also like to keep them short.

Thanks for your suggestions I will relook the names.

Edited by Docbyte: n/a

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try

for (i = 1; i <= lines; i++){
      cout <<i;
      for(j = 1; j <= i; j++) // calculation to print start
      cout <<"*";
      cout<<endl;
      }
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try

for (i = 1; i <= lines; i++){
      cout <<i;
      for(j = 1; j <= i; j++) // calculation to print start
      cout <<"*";
      cout<<endl;
      }

Thanks that got it I had duplicated the line number loop

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