COMP $141$: Language Design Criteria

Instructions: In this exercise, we are going to review different PL design criteria.

$1$ Commenting in C

There are two mechanisms in C to declare comments:

$1.$ Commenting in a single line using $//$ at the beginning, and

$2.$ Commenting in potentially multiple lines using $/*$ to mark the beginning and $*/$ to mark the ending.

For each of the following criteria, argue which commenting mechanism is more preferred.

$$ readability,

$$ writability, and

$$ reliability

$2$ Explicitly$-$typed vs$.$ implicitly$-$typed PLs

In explicit$-$typed PLs$,$ the programmer is supposed to annotate each data container with some type. This is

while, in implicitly$-$typed PLs there is not such restriction for the programmer. Compare how this language

feature affects the following criteria:

$$ syntax conciseness,

$$ maintainability, and

$$ expressiveness

$3$ Semantic safety in C$++$ vs$.$ Java

$1.$ Consider the following program in C$++.$ Run it and report the result.

int main$()\{$

int arr$[3]=\{1,2,3\}$;

cout$<$