It looks like you're new here. If you want to get involved, click one of these buttons!

- 141.4K All Categories
- 104.6K Programming Languages
- 6.4K Assembler Developer
- 1.9K Basic
- 39.8K C and C++
- 4.3K C#
- 7.9K Delphi and Kylix
- 4 Haskell
- 9.6K Java
- 4.1K Pascal
- 1.3K Perl
- 2K PHP
- 516 Python
- 48 Ruby
- 4.3K VB.NET
- 1.6K VBA
- 20.8K Visual Basic
- 2.6K Game programming
- 311 Console programming
- 89 DirectX Game dev
- 1 Minecraft
- 110 Newbie Game Programmers
- 2 Oculus Rift
- 8.9K Applications
- 1.8K Computer Graphics
- 729 Computer Hardware
- 3.4K Database & SQL
- 522 Electronics development
- 1.6K Matlab
- 628 Sound & Music
- 256 XML Development
- 3.3K Classifieds
- 195 Co-operative Projects
- 184 For sale
- 189 FreeLance Software City
- 1.9K Jobs Available
- 600 Jobs Wanted
- 201 Wanted
- 2.9K Microsoft .NET
- 1.7K ASP.NET
- 1.1K .NET General
- 3.3K Miscellaneous
- 4 Join the Team
- 0 User Profiles
- 352 Comments on this site
- 59 Computer Emulators
- 2.1K General programming
- 181 New programming languages
- 611 Off topic board
- 168 Mobile & Wireless
- 42 Android
- 124 Palm Pilot
- 335 Multimedia
- 151 Demo programming
- 184 MP3 programming
- 0 Bash scripts
- 19 Cloud Computing
- 53 FreeBSD
- 1.7K LINUX programming
- 367 MS-DOS
- 0 Shell scripting
- 320 Windows CE & Pocket PC
- 4.1K Windows programming
- 891 Software Development
- 408 Algorithms
- 68 Object Orientation
- 87 Project Management
- 90 Quality & Testing
- 237 Security
- 7.5K WEB-Development
- 1.8K Active Server Pages
- 61 AJAX
- 2 Bootstrap Themes
- 55 CGI Development
- 19 ColdFusion
- 222 Flash development
- 1.4K HTML & WEB-Design
- 1.4K Internet Development
- 2.2K JavaScript
- 34 JQuery
- 284 WEB Servers
- 151 WEB-Services / SOAP

bombyx
Posts: **3**Member

in Algorithms

Hi! I'm James from the Philippines, I'm 17 yrs old, freshman college student taking up computer science. I am actually a beginner in programming. My professor give us an programming assignment in VB 6 about precedence. I'm doing this for almost two weeks now, but then I still cannot change the order of the precedence. I find it hard because instead of MDAS(multiplication,division,addition,and subtraction)order, it is now reverse (addition,subtraction,multiplication,division). I hope someone will help me.

My professor instruct us to use one textbox for the inputs and command button for evaluation...

Assume the following rules of precedence for expressions:

Highest is addition (+)

then subtraction (-)

then multiplication (*)

then division (/)

Evaluate inputs such as:

(a) 1+4*3-2/2 Output: 5*3-2/2 = 5*1/2 = 5/2 = 2.5

(b) 5-2/2+1*2 Output: 5-3/3*2 = 2/3*2 = 4/6 = 0.66667

(c) 3-2+4-2+5 Output: 3-6-7 = -3 - 7 = -10

Output up to 5 decimal places if long.

My professor instruct us to use one textbox for the inputs and command button for evaluation...

Assume the following rules of precedence for expressions:

Highest is addition (+)

then subtraction (-)

then multiplication (*)

then division (/)

Evaluate inputs such as:

(a) 1+4*3-2/2 Output: 5*3-2/2 = 5*1/2 = 5/2 = 2.5

(b) 5-2/2+1*2 Output: 5-3/3*2 = 2/3*2 = 4/6 = 0.66667

(c) 3-2+4-2+5 Output: 3-6-7 = -3 - 7 = -10

Output up to 5 decimal places if long.

Terms of use / Privacy statement / Publisher: Lars Hagelin

Programmers Heaven articles / Programmers Heaven files / Programmers Heaven uploaded content / Programmers Heaven C Sharp ebook / Operated by CommunityHeaven LLC

© 1997-2015 Programmersheaven.com - All rights reserved.

## Comments

6,349Member: student taking up computer science. I am actually a beginner in

: programming. My professor give us an programming assignment in VB 6

: about precedence. I'm doing this for almost two weeks now, but then

: I still cannot change the order of the precedence. I find it hard

: because instead of MDAS(multiplication,division,addition,and

: subtraction)order, it is now reverse

: (addition,subtraction,multiplication,division). I hope someone will

: help me.

:

: My professor instruct us to use one textbox for the inputs and

: command button for evaluation...

:

: Assume the following rules of precedence for expressions:

: Highest is addition (+)

: then subtraction (-)

: then multiplication (*)

: then division (/)

:

: Evaluate inputs such as:

: (a) 1+4*3-2/2 Output: 5*3-2/2 = 5*1/2 = 5/2 = 2.5

: (b) 5-2/2+1*2 Output: 5-3/3*2 = 2/3*2 = 4/6 = 0.66667

: (c) 3-2+4-2+5 Output: 3-6-7 = -3 - 7 = -10

: Output up to 5 decimal places if long.

If none of the calculations hve brackets in them, then the best way to evaluate them is as follows:

1) split the calculation into the numbers and operators.

example: (a) becomes a list of values 1, +, 4, *, 3, -, 2, /, 2

2) loop through that list and calculate each + and replace the 3 elements with the result

example: (a) becomes a list of values 5, *, 3, -, 2, /, 2

3) repeat step 2 until there are no more +-operators

4) Repeat steps 2 and 3 for each operator according to the preference rules

example:

(a) becomes a list of values 5, *, 1, /, 2

(a) becomes a list of values 5, *, 0.5

(a) becomes a list of values 2.5

Once all the operators are calculated, there should only be 1 element left in the list: the final result.

1Member: : student taking up computer science. I am actually a beginner in

: : programming. My professor give us an programming assignment in VB 6

: : about precedence. I'm doing this for almost two weeks now, but then

: : I still cannot change the order of the precedence. I find it hard

: : because instead of MDAS(multiplication,division,addition,and

: : subtraction)order, it is now reverse

: : (addition,subtraction,multiplication,division). I hope someone will

: : help me.

: :

: : My professor instruct us to use one textbox for the inputs and

: : command button for evaluation...

: :

: : Assume the following rules of precedence for expressions:

: : Highest is addition (+)

: : then subtraction (-)

: : then multiplication (*)

: : then division (/)

: :

: : Evaluate inputs such as:

: : (a) 1+4*3-2/2 Output: 5*3-2/2 = 5*1/2 = 5/2 = 2.5

: : (b) 5-2/2+1*2 Output: 5-3/3*2 = 2/3*2 = 4/6 = 0.66667

: : (c) 3-2+4-2+5 Output: 3-6-7 = -3 - 7 = -10

: : Output up to 5 decimal places if long.

:

: If none of the calculations hve brackets in them, then the best way

: to evaluate them is as follows:

: 1) split the calculation into the numbers and operators.

: example: (a) becomes a list of values 1, +, 4, *, 3, -, 2, /, 2

: 2) loop through that list and calculate each + and replace the 3

: elements with the result

: example: (a) becomes a list of values 5, *, 3, -, 2, /, 2

: 3) repeat step 2 until there are no more +-operators

: 4) Repeat steps 2 and 3 for each operator according to the

: preference rules

: example:

: (a) becomes a list of values 5, *, 1, /, 2

: (a) becomes a list of values 5, *, 0.5

: (a) becomes a list of values 2.5

: Once all the operators are calculated, there should only be 1

: element left in the list: the final result.

i think your idea is possible. however, if you have this expression -2+5*4 by splitting the calculation into numbers and operators you will get -7*4 instead of 3*4

6,349Member: : : student taking up computer science. I am actually a beginner in

: : : programming. My professor give us an programming assignment in VB 6

: : : about precedence. I'm doing this for almost two weeks now, but then

: : : I still cannot change the order of the precedence. I find it hard

: : : because instead of MDAS(multiplication,division,addition,and

: : : subtraction)order, it is now reverse

: : : (addition,subtraction,multiplication,division). I hope someone will

: : : help me.

: : :

: : : My professor instruct us to use one textbox for the inputs and

: : : command button for evaluation...

: : :

: : : Assume the following rules of precedence for expressions:

: : : Highest is addition (+)

: : : then subtraction (-)

: : : then multiplication (*)

: : : then division (/)

: : :

: : : Evaluate inputs such as:

: : : (a) 1+4*3-2/2 Output: 5*3-2/2 = 5*1/2 = 5/2 = 2.5

: : : (b) 5-2/2+1*2 Output: 5-3/3*2 = 2/3*2 = 4/6 = 0.66667

: : : (c) 3-2+4-2+5 Output: 3-6-7 = -3 - 7 = -10

: : : Output up to 5 decimal places if long.

: :

: : If none of the calculations hve brackets in them, then the best way

: : to evaluate them is as follows:

: : 1) split the calculation into the numbers and operators.

: : example: (a) becomes a list of values 1, +, 4, *, 3, -, 2, /, 2

: : 2) loop through that list and calculate each + and replace the 3

: : elements with the result

: : example: (a) becomes a list of values 5, *, 3, -, 2, /, 2

: : 3) repeat step 2 until there are no more +-operators

: : 4) Repeat steps 2 and 3 for each operator according to the

: : preference rules

: : example:

: : (a) becomes a list of values 5, *, 1, /, 2

: : (a) becomes a list of values 5, *, 0.5

: : (a) becomes a list of values 2.5

: : Once all the operators are calculated, there should only be 1

: : element left in the list: the final result.

:

: i think your idea is possible. however, if you have this expression

: -2+5*4 by splitting the calculation into numbers and operators you

: will get -7*4 instead of 3*4

:

:

With a minor adjustment (-number is split into + (-number)) this can be rectified. His example of 3-6-7 then becomes: 3, +, -6, +, -7.