Thread: onion stlye of coding

Code:

int add(int a, int b) { return a+b; }
int addThem(int a, int b) { return add(a,b); }
int addition(int a, int b) { return addThem(a,b); }
// ... 
int main()
{
    return addition(-5, 5);
}

i am sick of this onion style of coding
can someone please give me a little comment on this, possibly giving reasons, why it can be useful?