What is wrong with my mario code?

Question

When I run my code with make mario and ./mario, everything works fine with user input. I can enter any integer and I get the correct result. But when I enter check50, I get this result:

:) 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"
:( 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 ""

Why does check50 not work when my code works fine with user input?

This is my code:

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

int main(void) 
{
    int n;
    do {
        printf("Height:");
        n = GetInt();
    }
    while (n > 23 || n < 0);

    for (int b = 0, c = n; b < n; b++, c--)
    {
        for (int z = 0; z < c; z++)
        {
            printf(" ");
        }
            for (int y = -2 ; y < b; y++)
            {
                printf("#");
            }
            printf("\n");
    }
}

Answer 1

check50 expects very exact output. Anything extra or missing, a prompt, character, space, line feed, whitespace, etc., will generate a failed test result.

In your case, it may look right to you, but it isn't. There's an extra space at the beginning of every line of the pyramid.

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