1. Task & References
Q2: x = y = z;
2.1 Soln: Precedence Level & Associativity
| Operator | Precedence Level | Associativity |
|---|---|---|
| ’\(=\)’ | \(16\) | \([L \leftarrow R]\) |
2.2 Soln: Workout
\[x = y = z;\] \[x_{16} = {}_{16}y_{16} = {}_{16}z;\] \[x_{16} = {}_{16}(y_{16} = {}_{16}z);\] \[x_{16} = {}_{16}(y=z);\] \[(x_{16} = {}_{16}(y=z));\] \[(x = (y=z));\]
Q3: z *= ++y + 5;
3.1 Soln: Precedence Level & Associativity
c++ Operator |
Precedence Level | Associativity | Description |
|---|---|---|---|
*= |
\(16\) | \([L \leftarrow R]\) | Multiplication assignment |
++ |
\(3\) | \([L \leftarrow R]\) | Prefix increment (++y)- opposed to y++- i.e. Suffix increment - i.e. \([2: L \to R]\) |
+ |
\(6\) | \([L \leftarrow R]\) | Unary plus |
3.2 Soln: Workout
\[z \texttt{ *=} \texttt{ ++}y + 5;\] \[z_{[16]} \texttt{ *= }_{[16]}\texttt{++}{}_{[3]}y_{[6]} + {}_{[6]}5;\] \[z_{[16]} \texttt{ *= }_{[16]}(\texttt{++}{}_{[3]}y)_{[6]} + {}_{[6]}5;\] \[z_{[16]} \texttt{ *= }_{[16]}(\texttt{++}y)_{[6]} + {}_{[6]}5;\] \[z_{[16]} \texttt{ *= }_{[16]}((\texttt{++}y)_{[6]} + {}_{[6]}5);\] \[z_{[16]} \texttt{ *= }_{[16]}((\texttt{++}y) + 5);\] \[(z \texttt{ *= }((\texttt{++}y) + 5));\]
Q4: a || b&&c || d;
4.1 Soln: Precedence Level & Associativity
c++ Operator |
Precedence Level | Associativity | Description |
|---|---|---|---|
|| |
\(15\) | \([L \to R]\) | Logical OR (also or) |
&& |
\(14\) | \([L \to R]\) | Logical AND (also and) |
4.2 Soln: Workout
\[a_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}b_{[14]}{}_{[14]}\&\&_{[14]}{}_{[14]}c_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}d;\] \[a_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}(b_{[14]}{}_{[14]}\&\&_{[14]}{}_{[14]}c)_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}d;\] \[a_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}(b\&\&c)_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}d;\] \[(a_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}(b\&\&c))_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}d;\] \[(a||(b\&\&c))_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}d;\] \[((a||(b\&\&c))_{[15]}{}_{[15]}\texttt{ || }_{[15]}{}_{[15]}d);\] \[((a||(b\&\&c))d);\]