Programming & Computer Science Answers

Learners at a local basic school volunteered to sell fresh baked bread to raise funds to increase

the number of computers for their computer lab. Each student reported the number of loaves of

bread he/she sold. Write a C programme that will output the total number of loaves of bread

sold, the total revenue generated by selling the bread, and the average number of loaves of bread

sold by each student. The input data is provided in the following form:

Write a program in C to mimic the “delgroup” command on Linux. This command will delete a group. It has to handle 2 files “passwd” and “shadow”. Both these files will be in some folder specified by an environment variable PFILE. The program has to take all arguments as command line arguments

Write a program to calculate the approximate number of times the user's heart has beaten in his/her

lifetime using an average heart rate of 72 beats per minutes. Ask the user to input his/her age. Assume all years

have 365 days.

A drink costs 2 dollars. A taco costs 3 dollars. Write a program that given the number of each, compute total cost and assign totalCost with the result. Ex: 4 drinks and 6 tacos yields totalCost of 26. Read inputs from user.

Write a program in C to mimic the “deluser” command on Linux. This command will delete a user. It has to handle 2 files “passwd” and “shadow”. Both these files will be in some folder specified by an environment variable PFILE. The program has to take all arguments as command line arguments

Here is a while loop that counts from 1 to 5 that demonstrates the 3 steps of writing a loop. Can you change it to count from 2 to 10? Can you make it count by 2s? Can you make it count backwards?public class LoopTest1

{

public static void main(String[] args)

{

// 1. initialize the loop variable

int count = 1;


// 2. test the loop variable

while (count <= 5)

{

System.out.println(count);

// 3. change the loop variable

count++;

}

Create a class that imitates part of the functionality of the basic data type int. Call the

class Int (note different capitalization). The only data in this class is an int variable.

Include member functions to initialize an Int to 0, to initialize it to an int value, to display

it (it looks just like an int), and to add two Int values.

Write a program that exercises this class by creating one uninitialized and two initialized

Int values, adding the two initialized values

State each networking topologies and compare their advantages and usage in today's networking environment

Write a program that uses an initializer list to store the following set of numbers in an array named nums. Then, print the array.

14 36 31 -2 11 -6

Solve the following system of linear equations using (a) matrix inversion, and (b) Cramer's rule. [ 1 3 ox] To 0.5 1 y 10.5 0 1Z