Calling functions written in C returns wrong results

[eko23]

I was trying to replicate the "C invocation example" on this url 
"[https://nim-lang.org/docs/backends.html";](https://nim-lang.org/docs/backends.html&quot),
 i'm doing it on windows with my nim version being 1.0, it basically binds a C 
module with a function that adds up two numbers, and the thing is i'm getting 
the same wrong result over and over again, when adding 7 and 3 i get 6487644, 
i'm not quite familiar with C to be honest, and cant find why this happens, i 
would apreciate your help.