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2 years ago

What are the 3 dimension of an information system?

Computers and Technology

1 answer:

Ne4ueva [31]2 years ago

3 0

Answer:

There are three dimensions of information systems ; organizational, management, and technology. Senior management always make decisions, so senior management is required to understand these three dimensions to make better decisions of the business through information systems.

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Alcohol is a gateway drug. true or false?

Llana [10]

Yes because when you are continued or addicted to a certain drug (alcohol) you can get addicted to harder substances

8 0

3 years ago

Read 2 more answers

Write the half function. A function call and the functionprototype

EastWind [94]

Answer:

C code for half()

#include<stdio.h>

void half(float *pv);

int main()

{

float value=5.0; //value is initialized

printf ("Value before half: %4.1f\n", value); // Prints 5.0

half(&value); // the function call takes the address of the variable.

printf("Value after half: %4.1f\n", value); // Prints 2.5

}

void half(float *pv) //In function definition pointer pv will hold the address of variable passed.

{

*pv=*pv/2; //pointer value is accessed through * operator.

}

This method is called call-by-reference method.

Here when we call a function, we pass the address of the variable instead of passing the value of the variable.

The address of “value” is passed from the “half” function within main(), then in called “half” function we store the address in float pointer ‘pv.’ Now inside the half(), we can manipulate the value pointed by pointer ‘pv’. That will reflect in the main().

Inside half() we write *pv=*pv/2, which means the value of variable pointed by ‘pv’ will be the half of its value, so after returning from half function value of variable “value” inside main will be 2.5.

Output:

Output is given as image.

3 0

3 years ago

Mmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Serga [27]

Answer:

al-Khwarizmi

Explanation:

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3 years ago

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Compare the elements of the basic Software Development Life Cycle with 2 other models. How are they similar? How are they differ

Artemon [7]

Answer:

Explanation:

One of the basic notions of the software development process is SDLC models which stands for Software Development Life Cycle models. SDLC – is a continuous process, which starts from the moment, when it’s made a decision to launch the project, and it ends at the moment of its full remove from the exploitation. There is no one single SDLC model. They are divided into main groups, each with its features and weaknesses. The most used, popular and important SDLC models are given below:

1. Waterfall model

2. Iterative model

3. Spiral model

4. V-shaped model

5. Agile model

Stage 1. Planning and requirement analysis

Each software development life cycle model starts with the analysis, in which the stakeholders of the process discuss the requirements for the final product.

Stage 2. Designing project architecture

At the second phase of the software development life cycle, the developers are actually designing the architecture. All the different technical questions that may appear on this stage are discussed by all the stakeholders, including the customer.

Stage 3. Development and programming

After the requirements approved, the process goes to the next stage – actual development. Programmers start here with the source code writing while keeping in mind previously defined requirements. The programming by itself assumes four stages

• Algorithm development

• Source code writing

• Compilation

• Testing and debugging

Stage 4. Testing

The testing phase includes the debugging process. All the code flaws missed during the development are detected here, documented, and passed back to the developers to fix.

Stage 5. Deployment

When the program is finalized and has no critical issues – it is time to launch it for the end users.

SDLC MODELS

Waterfall – is a cascade SDLC model, in which development process looks like the flow, moving step by step through the phases of analysis, projecting, realization, testing, implementation, and support. This SDLC model includes gradual execution of every stage completely. This process is strictly documented and predefined with features expected to every phase of this software development life cycle model.

ADVANTAGES

Simple to use and understand

DISADVANTAGES

The software is ready only after the last stage is over

ADVANTAGES

Management simplicity thanks to its rigidity: every phase has a defined result and process review

DISADVANTAGES

High risks and uncertainty

Iterative SDLC Model

The Iterative SDLC model does not need the full list of requirements before the project starts. The development process may start with the requirements to the functional part, which can be expanded later.

ADVANTAGES

Some functions can be quickly be developed at the beginning of the development lifecycle

DISADVANTAGES

Iterative model requires more resources than the waterfall model

The paralleled development can be applied Constant management is required

Spiral SDLC Model

Spiral model – is SDLC model, which combines architecture and prototyping by stages. It is a combination of the Iterative and Waterfall SDLC models with the significant accent on the risk analysis.

4 0

2 years ago

Write a user-defined function that calculates the GPA. For the function name and arguments, use the following: The input argumen

QveST [7]

Answer:

#include <iostream>

#include <vector>

using namespace std;

void calGPA();

vector<int> g;

vector<int> h;

int main(){

char pushMore = 'y';

int fg, fh;

for (;;){

if (pushMore == 'n'){

break;

} else{

cout<< "Enter integer for grade: ";

cin>> fg;

cout<< "Enter integer for credit hours: ";

cin>> fh;

g.push_back(fg);

h.push_back(fh);

cout<< "Do you want to add more grade and credit hours? y/n: ";

cin>> pushMore;

}

calGPA();

}

void calGPA(){

double total = 0, GPA;

for (int i = 0; i < g.size(); ++i) {

total += g.at(i) * h.at(i) ;

}

cout<< "The GPA is : "<< total/g.size();

}

Explanation:

The C++ source code above defines two vectors 'g' and 'h'. The latter holds the grades of a student while the former holds the credit hours for the subject taken. The void 'calGPA' function calculates and prints the student's GPA.

7 0

2 years ago