The ____ preceding a formula alerts excel that you are entering a formula or function and not text

Which rotation speed is not a typical spindle rotation speed for magnetic hard drives?3100; 5400; 7200; 10000

Hitman42 [59]

Answer:

5,400 because it turns at the right speed, but if it is too fast or too slow, it will not perform at it's fullest potential. Such as speed and storage.

3 0

3 years ago

8. Software ____ are individual programs that can be purchased, installed, and run separately, but extract data from the common

oee [108]

System software are software that can be installed and run separately

6 0

2 years ago

Develop a C program that calculates the final score and the average score for a student from his/her (1)class participation, (2)

Ghella [55]

Answer:

#include <iomanip>

#include<iostream>

using namespace std;

int main(){

char name[100];

float classp, test, assgn, exam, prctscore,ave;

cout<<"Student Name: ";

cin.getline(name,100);

cout<<"Class Participation: "; cin>>classp;

while(classp <0 || classp > 100){ cout<<"Class Participation: "; cin>>classp; }

cout<<"Test: "; cin>>test;

while(test <0 || test > 100){ cout<<"Test: "; cin>>test; }

cout<<"Assignment: "; cin>>assgn;

while(assgn <0 || assgn > 100){ cout<<"Assignment: "; cin>>assgn; }

cout<<"Examination: "; cin>>exam;

while(exam <0 || exam > 100){ cout<<"Examination: "; cin>>exam; }

cout<<"Practice Score: "; cin>>prctscore;

while(prctscore <0 || prctscore > 100){ cout<<"Practice Score: "; cin>>prctscore; }

ave = (int)(classp + test + assgn + exam + prctscore)/5;

cout <<setprecision(1)<<fixed<<"The average score is "<<ave;

return 0;}

Explanation:

The required parameters such as cin, cout, etc. implies that the program is to be written in C++ (not C).

So, I answered the program using C++.

Line by line explanation is as follows;

This declares name as character of maximum size of 100 characters

char name[100];

This declares the grading items as float

float classp, test, assgn, exam, prctscore,ave;

This prompts the user for student name

cout<<"Student Name: ";

This gets the student name using getline

cin.getline(name,100);

This prompts the user for class participation. The corresponding while loop ensures that the score s between 0 and 100 (inclusive)

cout<<"Class Participation: "; cin>>classp;

while(classp <0 || classp > 100){ cout<<"Class Participation: "; cin>>classp; }

This prompts the user for test. The corresponding while loop ensures that the score s between 0 and 100 (inclusive)

cout<<"Test: "; cin>>test;

while(test <0 || test > 100){ cout<<"Test: "; cin>>test; }

This prompts the user for assignment. The corresponding while loop ensures that the score s between 0 and 100 (inclusive)

cout<<"Assignment: "; cin>>assgn;

while(assgn <0 || assgn > 100){ cout<<"Assignment: "; cin>>assgn; }

This prompts the user for examination. The corresponding while loop ensures that the score s between 0 and 100 (inclusive)

cout<<"Examination: "; cin>>exam;

while(exam <0 || exam > 100){ cout<<"Examination: "; cin>>exam; }

This prompts the user for practice score. The corresponding while loop ensures that the score s between 0 and 100 (inclusive)

cout<<"Practice Score: "; cin>>prctscore;

while(prctscore <0 || prctscore > 100){ cout<<"Practice Score: "; cin>>prctscore; }

This calculates the average of the grading items

ave = (int)(classp + test + assgn + exam + prctscore)/5;

This prints the calculated average

cout <<setprecision(1)<<fixed<<"The average score is "<<ave;

8 0

3 years ago

Which of the following is a term used for the permanent record of activities performed on the Internet?

Rasek [7]

Answer: Your history and you can check everything using a MAC or IP password

6 0

3 years ago

Write a program that will open the file random.txt and calculate and display the following: A. The number of numbers in the file

Rama09 [41]

Answer:

Here is the C++ program:

#include <iostream> //to use input output functions

#include <fstream> //to manipulate files

using namespace std; //to identify objects like cin cout

int main(){ //start of main function

ifstream file; //creates an object of ifstream

file.open("random.txt"); //open method to open random.txt file using object file of ifstream

int numCount = 0; //to store the number of all numbers in the file

double sum = 0; //to store the sum of all numbers in the file

double average = 0.0; //to store the average of all numbers in the file

int number ; //stores numbers in a file

if(!file){ //if file could not be opened

cout<<"Error opening file!\n"; } //displays this error message

while(file>>number){ //reads each number from the file till the end of the file and stores into number variable

numCount++; //adds 1 to the count of numCount each time a number is read from the file

sum += number; } //adds all the numbers and stores the result in sum variable

average = sum/numCount; //divides the computed sum of all numbers by the number of numbers in the file

cout<<"The number of numbers in the file: "<<numCount<<endl; //displays the number of numbers

cout<<"The sum of all the numbers in the file: "<<sum<<endl; //displays the sum of all numbers

cout<<"The average of all the numbers in the file: "<< average<<endl; //displays the average of all numbers

file.close(); } //closes the file

Explanation:

Since the random.txt is not given to check the working of the above program, random.txt is created and some numbers are added to it:

35

48

21

56

74

93

88

109

150

16

while(file>>number) statement reads each number and stores it into number variable.

At first iteration:

35 is read and stored to number

numCount++; becomes

numCount = numCount + 1

numCount = 1

sum += number; this becomes:

sum = sum + number

sum = 0 + 35

sum = 35

At second iteration:

48 is read and stored to number

numCount++; becomes

numCount = 1+ 1

numCount = 2

sum += number; this becomes:

sum = sum + number

sum = 35 + 48

sum = 83

So at each iteration a number is read from file, the numCount increments to 1 at each iteration and the number is added to the sum.

At last iteration:

16 is read and stored to number

numCount++; becomes

numCount = 9 + 1

numCount = 10

sum += number; this becomes:

sum = sum + number

sum = 674 + 16

sum = 690

Now the loop breaks and the program moves to the statement:

average = sum/numCount; this becomes:

average = 690/10;

average = 69

So the entire output of the program is:

The number of numbers in the file: 10 The sum of all the numbers in the file: 690 The average of all the numbers in the file: 69

The screenshot of the program and its output is attached.

5 0

4 years ago