Undeclared Identifier in do while loop, C

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

int main(void)
{
    do
    {
        //ask for input with 1-8
        int height = get_int("Height: ");
    }
    while (height > 0);
}

And I got the error code: use of undeclared identifier "height" (in the while statement)
I’m completely green to programming and I have no idea how to fix this. Can someone help?

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