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COMP 202 Lecture 10: COMP 202 - Lecture 10 - Sep 26, 2016

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School
McGill University
Department
Computer Science (Sci)
Course
COMP 202
Professor
Daniel Pomerantz

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Methods review public static double adder (int x){ x = x + 1; return x; Double x = 5; x = adder(x); x type mismatch error, the value in adder( ) must be an int. Does the following compile? public static void main(string[] args){ int x = 6; adder(x); System. out. println(x); public static double adder(int x){ x = x + 1; return x; On the line, adder(x); the value of adder(x) isn"t stored, you would have to write x = (int) adder(x); to print out 7. (you need to cast because the method adder returns a double). Note: there are two different variables named x. The x in the adder method is not related to the x in the main method (they store different values). Boolean is another datatype (like int, double, etc). Boolean values can take on one of two values: { true, false } Boolean variables can be combined using the and (&&), or (||), and not (!) operators.

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