why do i get a error?

Question

Can someone explain the error?
https://code.sololearn.com/cGLKUWhYigwU/?ref=app

Answer 1

You need to declare functions before main() if you want to use them inside of it, so just moving rnum in between lines 7 and 9 should work

Answer 2

isaac how do i prototype a class

Answer 3

If for some reasons you prefer the main() function being at the top

then all you have to do is prototype the function u want to use in the main

just add this *void rnum();* above the main function

and then, u can define it wherever u want after the main function

void rnum();
int main() {....}
void rnum(){.....}

This should work
https://code.sololearn.com/cWOLgOxOOq0W/#cpp

Answer 4

find the error and solve it