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Questions tagged [arithmetic-expressions]

An arithmetic expression is an expression that results in a numeric value. There are two kinds of numeric values, integers (whole numbers), and real or floating point numbers (numbers containing a decimal point).

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How do you filter mathematically calculated data in SQL?

This is probably easier than I think it is, but I am stumped. I wrote the following query which sums up all the purchases made by a customer at a particular store, as well as the total amount of returns made by the same customer at the same store,…
Jason Bodak
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Use sh while-read-line-loop iteration counter outside loop

I am writing git hook and very confused by next code behavior: #!/bin/sh exit_code=0 git diff --cached --name-only --diff-filter=ACM | while read line; do echo "Do something with file: $line" # some stuff with exit code is equals to 0 or…
Ivan Velichko
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Use variable as operator for calculation C

I'm looking for a way to evaluate arithmetic operation using variable instead of operators. Here is an example: char op1 = '+'; char op2 = '/'; int i = 0; i = 4 op1 5 op2 3; I've no idea if its possible in C. But, if its possible.. would be…
samaxI92
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Generating invalid inequality combinations

This is a pretty obscure question but I thought I'd try my luck. I need to generate invalid combinations of inequalities for a set of unknown variables. For example, given a, b and c, I would like to generate these: a < b && a ≥ c && b ≤ c a ⩵ b &&…
Max
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calculating arithmetic expressions in assembly x86

i have an assembly x86 question INCLUDE Irvine32.inc .data day WORD 0 month WORD 0 year WORD 0 count BYTE 0 prompt1 BYTE "enter month: ",0 prompt2 BYTE "enter day: ",0 prompt3 BYTE "enter an year: ",0 prompt4 BYTE " the day of the week is…
bluebk
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Adding two params of a predicate that aren't static

I'm trying to add two numbers together add(num1, num2, output) :- output is num1 + num2. Let's say X is 1 and Y is 3, but they're not static, just variables. add(X, Y, out). I get a error(instantiation_error,(is)/2) error Any suggestions?
shoconinja
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Arithmetic Recursion

I'm a beginner to scheme and I'm trying to learn some arithmetic recursion. I can't seem to wrap my head around doing this using scheme and producing the correct results. For my example, I'm trying to produce a integer key for a string by doing…
Sixers17
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How do you calculate integers overflow?

I try to calculate, based on given parameters, integer overflow. for example, if I have an integer than is <= 200, but when I insert it to an unsigned int, it will be > 200. What is the actual arithmetic process for that?
buddy123
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Performing Arithmetic Operations On String In C#

Im a C# beginner here,Im taking string from textbox and applying following algo,but the breaking of operands and operator doesnt work.. string cal = "225+699"; char[] all= cal.ToCharArray(); int i=0,j=0; while (all[i]…
Talha Hasan Zia
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How to prevent arithmetic on null values?

Using Oracle11g: If the column is null, I want to exclude the arithmetic on the column. In this case, how can I get lag_diff for seqno=1 to be null? with detail_records as ( select 1 seqno, 10 set_a from dual union all select 2 seqno, 10…
zundarz
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Bad practice to initialize and calculate in a single variable? Visual C++

Is it bad practice to initialize and do arithmetic within a variable? i.e say I have multiple rooms of different area dimensions that I must find the area of: (example in feet) double room_area1 = 9.5 * 6.8; double room_area2 = 9.1 * 6.2; double…
wilbomc
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C, rounding problems. UWORD, ints, and doubles

I have a few questions as to what the results of these operations are. Firstly, if I have two integers and divide them and save the result in a double. Will there be any rounding issues such that 1/2 will equal .5 and not 1. double ratio =…
AnotherUser
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Implementing an arithmetic parser in Prolog

I have the following Prolog code: expression-->first,operator,second. first-->[X]. operator-->['+'];['-']. second-->[X]. After compilation, the machine responds with "yes" in the command line for the following types of queries: | ?-…
Luka
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how to assert an arithmetic relation in Prolog database

I'm using forward chaining algorithm proposed by Bratko. How can I enter arithmetic rules in prolog DB. For example I want to enter age is 35. In other words I want to enter the fact(age,35). Thanks
remo
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ACM programming - Arithmetica 1.0 - any additional operators?

Has anyone in this forum attempted to solve the ACM programming problem http://acm.mipt.ru/judge/problems.pl?browse=yes&problem=024? It is one of the simpler problems in ACM MIPT and the goal is to evaluate an expression consisting of +, -, * and…
so1
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