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Asked: 2021-11-14T12:17:12+05:30 In:

Explain the terms infix expression, prefix expression, and postfix expression. Convert the following infix expressions to their postfix equivalents: (a) A – B + C (b) A * B + C / D (c) (A – B ) + C * D / E – C (d) (A * B) + (C / D) – ( D + E)

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Infix Notation
We write expression in infix notation, e.g. a - b + c, where operators are used in-between operands.

Prefix Notation
In this notation, operator is prefixed to operands, i.e. operator is written ahead of operands. For example, +ab. This is equivalent to its infix notation a + b. Prefix notation is also known as Polish Notation.

Postfix Notation
This notation style is known as Reversed Polish Notation. In this notation style, the operator is postfixed to the operands i.e., the operator is written after the operands. For example, ab+. This is equivalent to its infix notation a + b.
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