Nested Loops

[AmLegacy]

Hi, I'm trying to draw:
0
01
012
0123
01234
0123
012
01
0
So far I have the beginning for (i=1; i<=n; ++i)
{ for (j=0; j<i; ++j)
{printf("%d ", j);}
printf("\n" );
}

Does anyone know how to go backwards? I'm at my wits end.

[Ganon11]

You know that you can have loops that go backwards - start at a high number, end when the number is lower than 0, and decrement the counter - yes?

[AmLegacy]

Would you add two new variables and nest a decremented double for loop? With k being greater than or equal to n?