Evaluation of Postfix Expression Examples

Evaluation of Postfix Expression Examples

Click on the examples for solutions

Example 1:  62/3-42*+

Example 2:  42$3*3-84/11+/+

Example 3:  623+-382/+*2$3+

Example 4:  7532^*922^-/+64*+

Evaluation of Postfix Expression Example 4

Evaluation of Postfix Expression 

Example 2:

Evaluate the following Postfix Expression:   7532^*922^-/+64*+

Symb	Operand1	Operand2	Value	Operand Stack
7				7
5				7, 5
3				7, 5, 3
2				7, 5, 3, 2
^	3	2	9	7, 5, 9
*	5	9	45	7, 45
9				7, 45, 9
2				7, 45, 9, 2
2				7, 45, 9, 2, 2
^	2	2	4	7, 45, 9, 4
-	9	4	5	7, 45, 5
/	45	5	9	7, 9
+	7	9	16	16
6				16, 6
4				16, 6, 4
*	6	4	24	16, 24
+	16	24	40	40 (Result)

Evaluation of Postfix Expression Example 3

Evaluation of Postfix Expression 

Example 3:

Evaluate the following Postfix Expression: 623+-382/+*2$3+

Symb	Operand1	Operand2	Value	Operand Stack
6				6
2				6, 2
3				6, 2, 3
+	2	3	5	6, 5
-	6	5	1	1
3				1, 3
8				1, 3, 8
2				1, 3, 8, 2
/	8	2	4	1, 3,  4
+	3	4	7	1, 7
*	1	7	7	7
2				7, 2
$	7	2	49	49
3				49, 3
+	49	3	52	52 (Result)

Evaluation of Postfix Expression Example 2

Evaluation of Postfix Expression 

Example 2:

Evaluate the following Postfix Expression:   42$3*3-84/11+/+

Symb	Operand1	Operand2	Value	Operand Stack
4				4
2				4, 2
$	4	2	16	16
3				16, 3
*	16	3	48	48
3				48, 3
-	48	3	45	45
8				45, 8
4				45, 8, 4
/	8	4	2	45, 2
1				45, 2, 1
1				45, 2, 1, 1
+	1	1	2	45, 2, 2
/	2	1	1	45, 1
+	45	1	46	46 (Result)