# PSET 1 Mario calculating spaces

Having a little issue understanding this. in the mario code I'm looking at.

// I understand this repeats the loop "pyramid_height" times. all good here.

for(int i = 0; i < pyramid_height; i++)

// here's my question. this will print appropriate number of spaces. Say a pyramid height of 5 -i (say were on the 3rd row so "i" would equal 3 correct?) -1 To me this looks like 5-3-1=1 that would print one space..but I would want to print 2 spaces on the third row.

{ for(int j = 0; j < pyramid_height-i-1; j++) { printf("%s", " ");

FULL CODE BELOW

``````#include <stdio.h>
#include <cs50.h>

int main(void)
{

int pyramid_height = 0;

do {
printf("Height:");
pyramid_height = GetInt();
if (pyramid_height == 0)
{
return 0;
}
} while (pyramid_height < 1 || pyramid_height > 23);

for(int i = 0; i < pyramid_height; i++)
{

for(int j = 0; j < pyramid_height-i-1; j++)
{
printf("%s", " ");
}

for(int k = 0; k < i+2; k++)
{
printf("#");
}
printf("\n");
}
return 0;
``````
• Where did you figure out that you needed to nestle the for loops inside of each other? That was where I was struggling, and couldn't find a good example in the walkthroughs or shorts. Commented Mar 30, 2017 at 18:59
• also, did you get the following when you ran the check?~/workspace/pset1/ \$ check50 2016.mario.less mario.c :) mario.c exists :) mario.c compiles :) rejects a height of -1 :) handles a height of 0 correctly :( handles a height of 1 correctly \ expected output, but not " #\n" Commented Mar 30, 2017 at 19:13
• :( handles a height of 2 correctly \ expected output, but not " #\n ##\n" :( handles a height of 23 correctly \ expected output, but not " #\n ..." :( rejects a height of 24, and then accepts a height of 2 \ expected output, but not " #\n ##\n" :) rejects a non-numeric height of "foo" :) rejects a non-numeric height of "" Commented Mar 30, 2017 at 19:13
• @mreliot0811 I got that same error when I ran check50. Did you figure out what the issue was? Commented Apr 8, 2017 at 19:20

You don't need it to be `height-i-1` and you can just do `height-i`
Your hashes can be `i+1` rather than `i+2`