Programming & Computer Science Answers

6. A company wants to transmit data over the telephone, but is concerned that its phones could be tapped. All of the data are transmitted as two-digit integers. The company has asked you to write a program that encrypts the data so that it can be transmitted more securely. Your program should read a two-digit integer and encrypt it as follows: Replace each digit by (the digit plus 7) modulus 10). Then, swap the first digit with the second and print out the encrypted integer.

4. Develop a simple application using functions to calculate the area of the following shapes: Square, Rectangle and Triangle. The user should be able to perform any of the calculation and also press a key to terminate the program

a. Using Cohen-Sutherland algorithm,

Let, the rectangular window A (15, 15), B (80, 15), C (80, 60), D (15, 60). Find the region codes, slope, intersection points to clip the line with P1(10,20) and P2(70, 80).

b. Calculate the dot product of a= (22, 2, 7) & b= (12, -9, 11). And Cross Product of c= (4, 0, 3) & d= (3, 1, 7).

2. Write the class definition for a Date class that contains three integer data members: month, day, and year. Include a default constructor that assigns the date 1/1/2000 to any new object that does not receive arguments. Also include a function that displays the Date object. Write a main() function in which you instantiate two Date objects—one that you create using the default constructor values, and one that you create using three arguments—and display its values. Save the file as Date.cpp

Calculate the dot product of a= (22, 2, 7) & b= (12, -9, 11). And Cross Product of c= (4, 0, 3) & d= (3, 1, 7).

Using Cohen-Sutherland algorithm,

Let, the rectangular window A (15, 15), B (80, 15), C (80, 60), D (15, 60). Find the region codes, slope, intersection points to clip the line with P1(10,20) and P2(70, 80).

Java program to

(a) - Count the number of Words in the paragraph starts with the letter taken as input from the

user.

(b)- Display the total number of words in the paragraph

How the compilation process of the Java language is different from that of C++ programming language. Discuss in details.

How the compilation process of the Java language is different from that of C++ programming language. Discuss in details.

Accept names and marks of 10 students from user

. Ensure that valid data is entered. If user enters an invalid data then appropriate message should be displayed, e.g. “Name cannot be a number” or “Marks must be an integer value”

. Display this data in descending order according to the marks such that name of the student having maximum marks should be displayed at the top and the name of the student having minimum marks should be displayed at the bottom