what if there was no concept of return type? xD

Question

imagine there wont be concept of return datatype or even return in methods😂😂
so what would have been in place of it..

Answer 1

the early languages had no functions, therefore no return type. Codes were ugly back then....

Answer 2

What would have been in place of no return types is using a strictly reference based variable system, where you would have to pass in a reference of a variable into every single function. Like this:

void multByTwo (int &refVar) { ... }

Then the functions have access to those variables by reference and there would be no need to return it.

Answer 3

If there is no return, you have to pass the output to the arguments (pointers or references)