Prefix expression notation requires that all operators precede the two operands that they work on. Postfix, on the other hand, requires that its operators come after the corresponding operands. A few more examples should help to make this a bit clearer (see Table 2). A + B * C would be written as + A * B C in prefix.
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). Postfix: An expression is called the postfix expression if the operator appears in the expression after the operands.
Infix Expressions
Infix expressions are the most usual type of expression. This notation is typically employed when writing arithmetic expressions by hand. Moreover Prefix Expressions
Prefix expressions, also known as Polish notation, place the operator before the operands. For example, in the expression “+ A B” Postfix Expressions
Postfix expressions, also known as reverse Polish notation, where we place the operator after the operands. For instance, in the expression “A B +” Comparison of The Expression Notations
The infix notation is the simplest notation for humans to read and write Conversion of Infix to Postfix
One of the applications of postfix notation is to build a calculator or evaluate expressions in a programming language. In addition Conclusion
The infix, prefix, and postfix notations are three different ways of writing and evaluating expressions 