Topics in computer programming

Computer programming is the process of performing particular computations (or more generally, accomplishing specific computing results), usually by designing and building executable computer programs. Programming involves tasks such as analysis, generating algorithms, profiling algorithms' accuracy and resource consumption, and the implementation of algorithms (usually in a particular programming language, commonly referred to as coding). The source code of a program is written in one or more languages that are intelligible to programmers, rather than machine code, which is directly executed by the central processing unit. To produce machine code, the source code must either be compiled or transpiled. Compiling takes the source code from a low-level programming language and converts it into machine code. Transpiling on the other hand, takes the source-code from a high-level programming language and converts it into bytecode. This is interpreted into machine code. The purpose of programming is to find a sequence of instructions that will automate the performance of a task (which can be as complex as an operating system) on a computer, often for solving a given problem. Proficient programming thus usually requires expertise in several different subjects, including knowledge of the application domain, specialized algorithms, and formal logic. Tasks accompanying and related to programming include testing, debugging, source code maintenance, implementation of build systems, and management of derived artifacts, such as the machine code of computer programs. However, while these might be considered part of the programming process, often the term software development is more likely used for this larger overall process – whereas the terms programming, implementation, and coding tend to be focused on the actual writing of code. Relatedly, software engineering combines engineering techniques and principles with software development.

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Related exercises (4)

Jumping salmon

The equation for uniformly accelerated rectilinear motion alone an x axis is $\ddot{x} = a ,$ where a is a constant. Show that its general solution is $x(t) = \frac{1}{2}at^2 + v_0t + x_0$ for any v₀ and x₀. Interpret these constants.
A salmon jumps out of a lake with initial velocity v₀ directed skywards. Gravity causes a constant acceleration u2005−u2005g on the fish. Represent graphically the fish’ vertical position as a function of time, as well as its speed as

Steering wheel and chassis

A horizontal steering wheel can turn around a vertical axis δ going through its center of mass G. That axis is secured to a chassis that can turn around another vertical axis Δ. Both axes are are separated by a distance d and we write O the point on axis Δ that’s a distance d from point G. The steering wheel has mass m and moment of inertia

I_{\rm v,\delta}

with respect to its principal axis δ. The chassis, on its own, has mass M and moment of inertia

I_{\rm c,\Delta}

with respect to its principal axis

Excitation of a vertical harmonic oscillator

A mass m is suspended on a spring of natural length l₀ and of elastic constant k. The spring is attached to a piston. The vertical motion of the piston is described by the equation s(t)u2004=u2004s₀cosu2006(ωt)xa0.

Give explicit expressions for the external forces and determine the equation of motion.
Show that the equation of motion can be recast as, $\ddot{x}\left(t\right) + c_1\,x\left(t\right) = c_1\,s\left(t\right)\ ,$ where x(t)u2004=u2004z(t)u2005+u2005c₂ with z(t) the vertica

Accident

A car accident occurs in a street of Lausanne where the maximum authorised velocity is 50u2006km/h. A car overthrows a pedestrian on a dry road. As the investigator arrives on the accident scene, he notices that :

two parallel traces of brake of Lu2004=u200460 m in length starting du2004=u200415 m before the axis of the pedestrian crossing of 4 m in length,
fragments of headlights at a distance du2004=u200415 m after the pedestrian crossing,
the headlights of the car are at a height h

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Related exercises (4)

Jumping salmon

The equation for uniformly accelerated rectilinear motion alone an x axis is $\ddot{x} = a ,$ where a is a constant. Show that its general solution is $x(t) = \frac{1}{2}at^2 + v_0t + x_0$ for any v₀ and x₀. Interpret these constants.
A salmon jumps out of a lake with initial velocity v₀ directed skywards. Gravity causes a constant acceleration u2005−u2005g on the fish. Represent graphically the fish’ vertical position as a function of time, as well as its speed as

Steering wheel and chassis

I_{\rm v,\delta}

with respect to its principal axis δ. The chassis, on its own, has mass M and moment of inertia

I_{\rm c,\Delta}

with respect to its principal axis

Excitation of a vertical harmonic oscillator

Give explicit expressions for the external forces and determine the equation of motion.
Show that the equation of motion can be recast as, $\ddot{x}\left(t\right) + c_1\,x\left(t\right) = c_1\,s\left(t\right)\ ,$ where x(t)u2004=u2004z(t)u2005+u2005c₂ with z(t) the vertica

Accident

two parallel traces of brake of Lu2004=u200460 m in length starting du2004=u200415 m before the axis of the pedestrian crossing of 4 m in length,
fragments of headlights at a distance du2004=u200415 m after the pedestrian crossing,
the headlights of the car are at a height h

Topics in computer programming

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