errorlnk2019

[186k92yv]

Hi..can someone explain to me what is errorlnk2019 is all about? I've been running a programmed, and there's a lot of error saying something about unresolved external symbol..

[Disch]

999 times out of 1000 "unresolved external symbol" means you prototyped a function, tried to call it, but forgot to give the function a body:

void foo();  // <- prototype a function

int main()
{
    foo();  // <- call it
}

// but there's no body for it!