CODEWITHSUNDEEP
erlang
Matt
Matt

Reputation: 33

Issue with Erlang, passing variables to two other functions

Hello I am trying to create a program that has a function main_function() that holds two int variables and then passes the variables to two other functions difference() and sum(). I want the two functions perform the computation and display the results. In turn calling each of the two functions from the main_function(). However I am currently having an issue with my program only outputting the bottom most function that is being called in the main_function()

Here is what I have

-module(numbers).
-export([main_function/2]).


main_function(X,Y)->
   sum(X,Y),
   difference(X,Y).

sum(X,Y)->
   X + Y.

difference(X,Y)->
   X - Y.

My output for this would be 2 if I was to pass 5 and 3 would for X and Y respectively and my program seems to be only using the difference() function and not sum(). I am looking for an output of 8 and 2.

Any help is greatly appreciated

Thanks

Upvotes: 1

Views: 72

Answers (1)

bxdoan
bxdoan

Reputation: 1369

You can change main_function/2 like below

main_function(X,Y)->
A = sum(X,Y),
B = difference(X,Y),
{A, B}.

The result in shell when X = 5, Y = 3 is:

{8, 2}

Or like this

main_function(X,Y)->
A = sum(X,Y),
B = difference(X,Y),
io:format("A = ~p~nB = ~p~n", [A, B]).

The result in shell when X = 5, Y = 3 is:

A = 8
B = 2

Upvotes: 1

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