What is Assignment: Definition and 358 Discussions

In computer programming, an assignment statement sets and/or re-sets the value stored in the storage location(s) denoted by a variable name; in other words, it copies a value into the variable. In most imperative programming languages, the assignment statement (or expression) is a fundamental construct.
Today, the most commonly used notation for this basic operation has come to be x = expr (originally Superplan 1949–51, popularized by Fortran 1957 and C) followed by x := expr (originally ALGOL 1958, popularised by Pascal), although there are many other notations in use. In some languages the symbol used is regarded as an operator (meaning that the assignment statement as a whole returns a value) while others define the assignment as a statement (meaning that it cannot be used in an expression).
Assignments typically allow a variable to hold different values at different times during its life-span and scope. However, some languages (primarily strictly functional) do not allow that kind of "destructive" reassignment, as it might imply changes of non-local state. The purpose is to enforce referential transparency, i.e. functions that do not depend on the state of some variable(s), but produce the same results for a given set of parametric inputs at any point in time. Modern programs in other languages also often use similar strategies, although less strict, and only in certain parts, in order to reduce complexity, normally in conjunction with complementing methodologies such as data structuring, structured programming and object orientation.

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  1. Gozupa

    Torque calculation of CV joint

    TL;DR Summary: help with assignment: find CV joint torque in 3 different situations Hi, I need help for my assignment. I need to calculate torque of CV joint of truck in 3 cases: a) CV joint torque on take off b) CV joint torque on take off on a slope in reverse c) CV joint torque while...
  2. Kami_Munchkins

    Signal Generator assignment, Multisim results confuse me

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  3. Ashish Somwanshi

    Matrix representation in QM Assignment -- Need some help please

    This screenshot contains the original assignment statement and I need help to solve it. I have also attached my attempt below. I need to know if my matrices were correct and my method and algebra to solve the problem was correct...
  4. shivajikobardan

    MHB Solving UnboundLocalError for Python Iterative Deepening Depth First Search

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  5. Andreas S-H

    What are some recommendations for a math and physics topic in high school?

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  6. Andy Resnick

    Media Literacy assignment: suggestions?

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  7. T

    How do I reference a photo taken from the assignment question?

    How do I reference a photo taken from the assignment question in Harvard style?
  8. S

    Assignment on the tight binding model

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  9. J

    Finding Values Using Fe-C Diagram for Materials Engineering Assignment

    Summary:: Need help with finding values using Fe c diagram Hi, I'm doing a materials engineering assignment. In the assignment they require us to make 3 swords being given martenistic steel bars with dimensions 40x100x1000mm with a composition of Fe-0.76wt.%C (eutectoid composition). Sword A...
  10. L

    Engineering Can somebody check assignment before I submit (maths)

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  11. S

    Solving a Problem in My Assignment: X1, X2, and X3

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  12. ahbin98

    Engineering Mechanical Vibration Assignment Help

    I just need any simple calculation that can be made, anyone who willing to help me out please contact me
  13. R

    I Who Really Copied the Assignment?

    If someone is lying, who copied the assignment? Alex: Cate copied the assignment. Cate: David copied the assignment. David: Cate is lying. Keil: I didn't copy.I think Cate is lying. If Alex is true and there is only one person who is lying, Cate and David can't be true at the same time. If...
  14. J

    Work, Power and Energy assignment marked wrong somehow? :(

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  15. H

    MHB Advanced Mathematics Assignment

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  16. C

    Help with Thermodynamics assignment

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  17. M

    I Larger assignment on Vector Fields

    Dear everyone. I'm doing an assignment on vectorfields and for most of the assignment I have to deal with tensors and tensornotation. The first assignment asks me to express the following vector and matrixproducts in tensornotation. $$\overline c = \overline a + \overline b \\ d=(\overline a +...
  18. MathematicalPhysicist

    Problem 16.1 of Ashcroft and Mermin, assignment (b)

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  19. devilish_wit

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  20. davidfur

    Fortran Assign 2D Array with Reals in Fortran - Help Needed

    Hi guys, On with my Fortran adventures...I'm trying to accomplish a simple task: assign a 2D array with some reals. Here's an excerpt from the code: subroutine get_energy_and_grad(natoms_,coords,ereal,gradmat) include 'cbka.blk' include 'opt.blk' integer, intent(in) :: natoms_...
  21. J

    Bungee jumping dynamics assignment

    Homework Statement A formula has been determined: d=l+h+ (l(SRT(m(m+150))+m)/75), where d is the depth jumped to, l is the length of the rope, h is the height of the jumper and m is the mass of the person. The question is: At present, the model does not include air resistance. Show and discuss...
  22. DvdP

    I need some help for the verification of an assignment about pendulums

    Hello, my name is Django and I live in the Netherlands. I've got an assignment for physics about pendulums and part of this assignment is that I need to verify my result with someone else in a country with a different gravitational force (the gravitational force were I live is 9.813 N/m2). I...
  23. K

    C/C++ Copy Assignment Operator for CarCounter Class

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  24. S

    Water Supply Reliability Modeling assignment + datasheet

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  25. E

    Write a function that will find a temperature....

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  26. B

    Water Bottle Design Using Polynomials

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  27. Vitani11

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  28. Worthatry

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  29. Unteroffizier

    Find Absolute Magnitude, distance and "T" of binary star system

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  30. ChrisVer

    What is the best way to avoid copying objects in an assignment operation?

    I have written the following class: class Rectangle{ private: double length; double height; const char* name; public: Rectangle (){}; Rectangle (double l, double h, const char* n) : length(l), height(h), name(n) {}...
  31. W

    IP Address Assignment: How are IP Addresses Assigned?

    Hi All, I am just curious. I am in a coffee shop using the internet. My (external) IP address in this coffee shop ( given by whatismyip.com) is the same as the IP address assigned to me at home by my ISP. I thought IP addresses are assigned dynamically when one logs into a network and the...
  32. M

    Assignment Operator Overloading Question

    Hey everyone. First I am new to programming (so my vocabulary and skills are not very proficient with C++), and I'm learning operator overloading. I have questions about line 1 and lines 5-8 of this code. Mod note: changed quote tags to code tags to preserve indentation. NumberArray&...
  33. Al_Pa_Cone

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  34. J

    Fortran Integer overflow on assignment

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  35. Al_Pa_Cone

    Mechanical Principles -- Assignment question

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  36. SuperSusanoo

    What Is a Scanner in Compiler Design?

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  37. kostoglotov

    Is there a mistake in the assignment?

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  38. S

    Engineering Students Academic Discussion

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  39. P

    Calculus Assignment Help: Temperature & Daylight Equations Explained

    Homework Statement [/B] 1. When a certain object is placed in an oven at 540°C, its temperature T(t) rises according to the equation T(t) = 540(1 – e^–0.1t), where t is the elapsed time (in minutes). What is the temperature after 10 minutes and how quickly is it rising at this time? I have...
  40. V

    Gross Wage Assignment Homework: Solve for Bangladesh, China, DR & Haiti

    Homework Statement Have to write a program that outputs the users gross wage. If the hours are over 40 then the hourly rate gets multiplied by 1.5. We also have to output the salary people would get from different countries: Bangladesh 0.15 cents China 0.48 cents Dominican Republic 1.60...
  41. G

    B What are some modern issues in the world of Nuclear physics?

    Hello! I was just wondering what this community is aware of in the world of modern nuclear physics. To be specific, for my assignment I am asked to research a topic or issue that is related to nuclear physics (and has relations to our daily lives). Some examples provided are: The use of...
  42. W

    MHB Debugging I/O Assignment: Structure Logic & Solve Problems

    Working on an I/O assignment and I'm running into some logic errors. I was wondering if I could get a quick break down (not necessarily code, but the pseudo code behind some of these points I'm supposed to be working on. That way I don't get spoiled with the answers, but have enough to go on...
  43. Physics Dad

    Electric Field Strength - Assignment Question

    Homework Statement The Nucleus of a helium ion contains two protons approximately 5x10-15m apart. They can be considered to be surrounded by one orbiting electron approximately 5x10-11m away. Calculate the following: a) The electrostatic force between the two protons b) The electrostatic...
  44. N

    What Could Have Saved the Titanic from Sinking: A Scientific Analysis

    Homework Statement I'm starting on 2 assignments which is Science and Physics and I have to come up with a theme/practical investigation to talk about on my chosen topics. Homework Equations What is an interesting topic to talk about which I can gather a lot of information on? I have chosen...
  45. I

    I need some hints for my assignment please

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  46. GZM

    Complicated Kinematic problem dealing with falling

    Homework Statement Problem states : A student walks off the top of the CN Tower in Toronto, which has height h and falls freely. His initial velocity is zero. The Rocketeer arrives at the scene a time of t later and dives off the top of the tower to save the student. The Rocketeer leaves the...
  47. GZM

    What is the ideal value of T for the rocket to reach 990 m altitude?

    Homework Statement Problem : During your summer internship for an aerospace company, you are asked to design a small research rocket. The rocket is to be launched from rest from the earth’'s surface and is to reach a maximum height of 990 m above the earth'’s surface. The rocket’'s engines give...
  48. A

    Prototype Project: Linkages using Popsicle Sticks

    Hi, this is my first post. I need some ideas for my prototype project using linkages. We are required to use recycled materials like popsicle stick as a link. Our instructor ask for an equipment or device that has an input motion and output useful work. Thank you.