mutual recursion

[Dan]

I have a program where I really need something like this :

int horizontal(int a , int b){

.....
vertical (c ,d);
......
}

int vertical (int a , int b ){
.........
horizontal(c,d)
.........
}

It won't compile , and restructuring would greatly obfuscate the
code . What's the easiest solution to do something like this in C++?

 

[Victor Bazarov]

I have a program where I really need something like this :

int horizontal(int a , int b){

....
vertical (c ,d);
.....
}

int vertical (int a , int b ){
........
horizontal(c,d)
........
}

It won't compile ,

Why do you think that?

> and restructuring would greatly obfuscate the
code . What's the easiest solution to do something like this in C++?

Add the declaration of 'vertical' and place it above the function you
call it in:

int vertical(int,int);

int horizontal(int a, int b) ...

V

 

[Victor Bazarov]

I have a program where I really need something like this :

int horizontal(int a , int b){

....
vertical (c ,d);
.....
}

int vertical (int a , int b ){
........
horizontal(c,d)
........
}

It won't compile , and restructuring would greatly obfuscate the
code . What's the easiest solution to do something like this in C++?

And next time please read the FAQ 5.2.

V

 

[Juha Nieminen]

I have a program where I really need something like this :

int horizontal(int a , int b){

....
vertical (c ,d);
.....
}

int vertical (int a , int b ){
........
horizontal(c,d)
........
}

It won't compile , and restructuring would greatly obfuscate the
code . What's the easiest solution to do something like this in C++?

You have to declare a function before calling it. Hence declare it:

int vertical(int a, int b);

int horizontal(int a, int b) { ... }
int vertical(int a, int b) { ... }