What's wrong with my code??

Question

#include <stdio.h>

int main()
{
int n, m, flag = 0, i = 0;

scanf("%d", &n);

int arr[n];
m = n + 1;
while (m--)
{
if (n % m == 0)
{
flag++;
arr[i] = m;
i++;
}
}

printf("%d\n", flag);

for (i = 0; i < flag; i++)
{
printf("%d ", arr[i]);
}

return 0;
}

When I write same program in for loop instead of while, Its work perfectly. Anyone describes the problem.

Answer 1

The error occurs when m reaches 0 and the code attempts to find the modulo of 0.

An easy fix is to use pre-decrement on m instead of post-decrement.

Change from
while (m--)

To
while (--m)

Answer 2

Hi. I tested your code. At the "while", i deleted the "--" and added a new line for m--, below the if statement. It worked, meaning that I got some input and no error.

Answer 3

hey maybe yo just need more practice but i'm sure you'll get it salaam alaikum