Most software today is very much like an Egyptian pyramid with millions of bricks piled on top of each other, with no structural integrity, but just done by brute force and thousands of slaves. Alan Kay
Infix and postfix are the notations to write the expressions. The infix notation put operators in between the operands. The postfix notation put operators after their operands. Write a program convert from infix notation to postfix notation.
Infix (5 + 3) * 12 / 3
Postfix: 5 3 + 12 * 3 /
Infix : 1+3*4/5 Postfix : 134*5/+