C++ Answers

We have a 4 x 4 two dimensional array. Fill it with random values from 1 to 100. Write a code to take transpose of the matrix. The following array is shown as an example:

1 2 3 4

5 6 7 8

9 10 11 12

13 14 15 16

BECOMES

1 5 9 13

2 6 10 14

3 7 11 15

4 8 12 16

Create an array of size 5x5 first fill the array with random values between 1 and 100, print it in straight and reverse order. Then fill that array from the user, print it in straight and reverse order.

Create an array of size 10 fill the array from the user. Then ask the user for the order of sorting ascending or descending. And sort the array using bubble sorting algorithm.

Write a program that declares 2 integer arrays x, y of size 10 each. The program then reads values for x and y arrays from the user (use some common values).

Finally the program finds the common values in x and y and prints them. If there is no common values in x and y print “There is nothing common between array x and y”.

Your boss sent you a notepad file called numbers.txt containing an

unknown number of integers. He requests you to write a single program

that a) reads these numbers into an array b) checks whether the file

has correctly opened c) prints out the average of all the numbers in the

array d) then program should search the array to see whether integer 150

is present e) finally the program should print out all the positive numbers

in the array. [20]

Create a class called Cuboid with the data members: length (float), breadth (float) and height (float). Use an inline function and calculate the area of the base using the formula = length * breadth and print it.

Define another member function and calculate the total surface area of the cube using the formula = 2*(length*breadth + breadth*height + height*length) and print it.

Define a friend function to calculate the volume of the cuboid using the formula = length*breadth*height. After calculating the volume, calculate the amount of liquid that can be stored if 1𝑚3 can store 100 liters of liquid.

Write a program to:

a)      Initialize an array of 8 entries for serial number.

b)     Set the value of 5^th serial number to 89.

c)      Set the value of 3^rd serial number to the addition of first two serial numbers.

d)     Display the serial number on 2^nd index

e)     Print the whole array

Write a program that dynamically allocates an array large enough to hold a user-defined number of test

scores. Once all the scores are entered, the array should be passed to a function that sorts them in

ascending order. Another function should be called that calculates the average score. The program

should display the sorted list of scores and averages with appropriate headings. Use pointer notation

rather than array notation whenever possible.

Input Validation: Do not accept negative numbers for test scores.

Example

Enter the number of test scores: 4

Enter each test score:

Test#1: 34

Test #2: 73

Test #3: 22

Test #4: 89

Sorted test scores:

Test #1: 22

Test #2: 34

Test #3: 73

Test #4: 89

Average = 54.5

Find the errors

int sum(int x, int y)

{

int result; result = x + y;

}

An integer is said to be a perfect number if the sum of its divisors, including 1 (but not the number itself),

is equal to the number. For example, 6 is a perfect number, because 6 = 1 + 2 + 3. Write a function

isPerfect() that determines whether parameter number is a perfect number. Use this function in a

program that determines and prints all the perfect numbers between 1 and 1000. Print the divisors of

each perfect number to confirm that the number is indeed perfect. Challenge the power of your computer

by testing numbers much larger than 1000.