C Programming Language
2nd Edition
ISBN: 9780131103627
Author: Brian W. Kernighan, Dennis M. Ritchie, Dennis Ritchie
Publisher: Prentice Hall
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Textbook Question
Chapter 1, Problem 13E
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The area of a rectangle is the rectangle’s length times its width. Write a program that asks for the length and width of two rectangles. The program should tell the user which rectangle has the greater area, the lesser area or if the areas are the same. Allow the user to continue to ask for measurements of two rectangles until he/she wishes to quit.
Suppose a right triangle is placed in a plane asshown below. The right-angle point is placed at (0, 0), and the other two pointsare placed at (200, 0) and (0, 100). Write a program that prompts the user to entera point with x- and y-coordinates and determines whether the point is inside thetriangle. Here are the sample runs:
Enter a point’s x- and y-coordinates: 100.5 25.5 ↵EnterThe point is in the triangle
Write a program that reads from the user a character ('q' or 'c').
If the character is 'c', the program reads from the user the radius rof a circle and prints its area.
• If the user enters 'q', the program asks the user to enter the length and width of a quadrilateral. We
assume the quadrilateral is either a square or rectangle. You should print if the quadrilateral is square
or rectangle.
• Otherwise, it prints "Wrong character"
PS: Use the following formulas:
area of circle=3.14*r
Sample Run1:
Enter a character (q or c): q
Enter the Length and Width: 80 150
|It is a rectangle
Sample Run2:
Enter a character (q or c): q
Enter the Length and Width: 80 80
It is a square
Sample Run3:
Enter a character (q or c): c
Enter the radius: 2
The area of the circle is 12.56
Sample Run4:
Enter a character (q or c): d
Wrong character
Chapter 1 Solutions
C Programming Language
Ch. 1 - Run the hello, world program on your system....Ch. 1 - Prob. 2ECh. 1 - Modify the temperature conversion program to print...Ch. 1 - Write a program to print the corresponding Celsius...Ch. 1 - Prob. 5ECh. 1 - Prob. 6ECh. 1 - Write a program to print the value of EOF.Ch. 1 - Write a program to count blanks, tabs and...Ch. 1 - Write a program to copy its input to its output,...Ch. 1 - Write a program to copy its input to its output,...
Ch. 1 - Prob. 11ECh. 1 - Write a program that prints its input one word per...Ch. 1 - Write a program to print a histogram of the...Ch. 1 - Write a program to print a histogram of the...Ch. 1 - Rewrite the temperature conversion program of...Ch. 1 - Revise the main routine of the longest-line...Ch. 1 - Write a program to print all input lines that are...Ch. 1 - Write a program to remove trailing blanks and tabs...Ch. 1 - Write a function reverse(s) that reverses the...Ch. 1 - Write a program detab that replaces tabs in the...Ch. 1 - Write a program entab that replaces strings of...Ch. 1 - Write a program to fold long input lines into two...Ch. 1 - Prob. 23ECh. 1 - Write a program to check a C program for...
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- Write a program to compute the area of triangle and if the area is more than or equal to 20 then display "large area" else display "small area".arrow_forwardThe area of a hexagon can be computed using thefollowing formula (s is the length of a side): Write a program that prompts the user to enter the side of a hexagon and displaysits area. Here is a sample run: Enter the side: 5.5 ↵EnterThe area of the hexagon is 78.59arrow_forwardYou wrote a program to draw a line from (24, 154) to some point (a, b). Your program draws the line using 75 pixels. While drawing, NE and E points were chosen equal number of times [assume that (24, 154) is neither an NE nor an E point]. What is the value of b? (Hint: a = 98).arrow_forward
- A number is a palindrome if its reversal is the same as itself. An even palindrome number is a number which is even and also a palindrome. Write a program that displays the first 50 even palindrome numbers. Display 5 numbers per line and align the numbers properly.arrow_forwardWrite a program in python Suppose a right triangle is placed in a plane as shown below. The right-angle point is at (0, 0), and the other two points are at (200, 0), and (0, 100). Write a program that prompts the user to enter a point with x- and y-coordinates and determines whether the point is inside the triangle. Sample runs of the program are given below: Enter a point's x- and y-coordinates: 100.5 25.5 The point is in the triangle Enter a point's x- and y-coordinates: 100.5 50.5 The point is not in the trianglearrow_forwardWrite a program that prompts the user to enter apoint (x, y) and checks whether the point is within the rectangle centred at (1, 1)with width 10 and height 5. For example, (2, 2) is inside the rectangle and (6, 4)is outside the rectangle, as shown in Figure . (Hint: A point is in the rectangleif its horizontal distance to (0, 0) is less than or equal to 10 / 2 and its verticaldistance to (0, 0) is less than or equal to 5.0 / 2. Test your program to cover allcases.) Here are two sample runs. Enter a point with two coordinates: 2 2 ↵EnterPoint (2.0, 2.0) is in the rectanglearrow_forward
- Write a program that displays all the numbers from 300 to 400, 5 per line, that are divisible by 3 or 6, but not both. Numbers are separated by exactly one space.arrow_forwardWrite a program that inputs a line of text from the user and counts; the total numbers of vowels (‘a’ / ‘A’, ‘e’ / ‘E’, ‘i’/’I’, ‘o’/’O’, ‘u’/’U’), the total number of consonants (letters that are NOT vowels), the total number of digits (‘0’ – ‘9’), and the total number of white space characters in the given line of text.arrow_forwardA string is a palindrome if it reads the same from front to back as it does from back to front (e.g. "kayak", "rotator" and "noon" are palindromes). When determining whether an alphanumeric string is a palindrome, we often ignore spaces, punctuation and case in the string (e.g. "A man, a plan, a canal --Panama!" is also considered a palindrome). Write a complete C program to read a string, echo it to the screen, determine whether it is a palindrome, and write a message indicating whether it is or isn't. Your main function should prompt for the string, read the string, print it, call the clean function (to remove all spaces, punctuation, and turn uppercase letters into lowercase letters), print the new string, then call the reverse function (to place the characters into reverse order) and print the new string resulting. In the final step, you will compare the result of the reverse function with the original string and print a message if the string is a palindrome or not. The clean…arrow_forward
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