Question

3) (a+b)*d+e/(f+a*d)+c
the prefix and post fix
expression​

Answer 1

Explanation:

Prefix to Postfix Conversion

Prefix : An expression is called the prefix expression if the operator appears in the expression before the operands. Simply of the form (operator operand1 operand2).

Example : *+AB-CD (Infix : (A+B) * (C-D) )

Postfix: An expression is called the postfix expression if the operator appears in the expression after the operands. Simply of the form (operand1 operand2 operator).

Example : AB+CD-* (Infix : (A+B * (C-D) )

Given a Prefix expression, convert it into a Postfix expression.

Conversion of Prefix expression directly to Postfix without going through the process of converting them first to Infix and then to Postfix is much better in terms of computation and better understanding the expression (Computers evaluate using Postfix expression).

Examples:

Input : Prefix : *+AB-CD

Output : Postfix : AB+CD-*

Explanation : Prefix to Infix : (A+B) * (C-D)

Infix to Postfix : AB+CD-*

Input : Prefix : *-A/BC-/AKL

Output : Postfix : ABC/-AK/L-*

Explanation : Prefix to Infix : A-(B/C)*(A/K)-L

Infix to Postfix : ABC/-AK/L-*