KwickClips Java · 43 sec · free
Which operator is placed first when converting?
Short answer. The one with higher precedence, here the multiply.
Do A, B and C change order?
No. Only the operators move.
Convert A + B * C
| Form | Answer |
|---|---|
| Infix | A + B * C |
| Postfix | A B C * + |
| Prefix | + A * B C |
Remember
| Higher precedence goes first |
| Operand order never changes |
A plus, B multiplied by C. Where does each operator go? Multiply first. Postfix puts star after B C, then plus. Postfix is A B C star plus. Prefix is plus A star B C. Higher precedence is placed first. Operands never change order.
This clip is from the full lesson: Infix, Prefix and Postfix Expressions — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ICSE Class 9 Computer Applications, ISC Class 12 Computer Science (868)
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