The document shows the step-by-step conversion of an infix notation mathematical expression (a + b - c) * d – (e + f) to postfix notation. Each line adds the next operation or operand to the postfix vector and/or pushes/pops the stack as the conversion proceeds from left to right. The final postfix notation is a b + c - d * e f + -.

1. infixVect
postfixVect
( a + b - c ) * d – ( e + f )
Infix to postfix conversion

2. infixVect
postfixVect
a + b - c ) * d – ( e + f )
(
stackVect
Infix to postfix conversion

3. infixVect
postfixVect
+ b - c ) * d – ( e + f )
(
a
Infix to postfix conversion
stackVect

4. infixVect
postfixVect
b - c ) * d – ( e + f )
(
a
+
Infix to postfix conversion
stackVect

5. infixVect
postfixVect
- c ) * d – ( e + f )
(
a b
+
Infix to postfix conversion
stackVect

6. infixVect
postfixVect
c ) * d – ( e + f )
(
a b +
-
Infix to postfix conversion
stackVect

7. infixVect
postfixVect
) * d – ( e + f )
(
a b + c
-
Infix to postfix conversion
stackVect

8. infixVect
postfixVect
* d – ( e + f )
a b + c -
Infix to postfix conversion
stackVect

9. infixVect
postfixVect
d – ( e + f )
a b + c -
*
Infix to postfix conversion
stackVect

10. infixVect
postfixVect
– ( e + f )
a b + c - d
*
Infix to postfix conversion
stackVect

11. infixVect
postfixVect
( e + f )
a b + c – d *
-
Infix to postfix conversion
stackVect

12. infixVect
postfixVect
e + f )
a b + c – d *
-
(
Infix to postfix conversion
stackVect

13. infixVect
postfixVect
+ f )
a b + c – d * e
-
(
Infix to postfix conversion
stackVect

14. infixVect
postfixVect
f )
a b + c – d * e
-
(
+
Infix to postfix conversion
stackVect

15. infixVect
postfixVect
)
a b + c – d * e f
-
(
+
Infix to postfix conversion
stackVect

16. infixVect
postfixVect
a b + c – d * e f +
-
Infix to postfix conversion
stackVect

17. infixVect
postfixVect
a b + c – d * e f + -
Infix to postfix conversion
stackVect