Define three address code. Write down Quadruples for a=-b*(c+d)/e

Three-address code is an intermediate representation in compilers where each instruction follows the format x := y op z, using at most three operands (two sources and one result). It simplifies code optimization and translation to machine code by breaking complex expressions into atomic operations.

Quadruples for a = -b * (c + d) / e

Quadruples represent three-address code with four fields: operator, source1, source2, and result.

Operator	Source1	Source2	Result
+	c	d	t1
-	b	None	t2
*	t2	t1	t3
/	t3	e	t4
=	t4	None	a

Breakdown:

1. Addition: Compute c + d → stored in t1.
2. Negation: Compute -b → stored in t2.
3. Multiplication: Multiply t2 * t1 → stored in t3.
4. Division: Divide t3 / e → stored in t4.
5. Assignment: Assign t4 to a.

Quadruples explicitly track intermediate results (t1–t4), enabling optimizations like dead-code elimination and register allocation.