Write a program to generate a random number between 1 - 100, and then display which quartile the number falls in.

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter15: Recursion
Section: Chapter Questions
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in c++

Write a program to generate a random number between 1 - 100, and then display which quartile the number falls in.

  • First quartile is 1 - 25
  • Second quartile is 26 - 50
  • Third quartile is 51 - 75
  • Fourth quartile is 76 - 100

To generate a random number, follow these steps:

  1. include necessary header files
    1. #include <cstdlib> //for random functions
    2. #include <ctime>  //for time functions
  2. set constants for the minimum and maximum values of the desired range
    1. const int MIN_VALUE = 1;  //minimum range value
    2. const int MAX_VALUE = 100;  //maximum range value
  3. seed the random number generator (RNG) with a unique unsigned int value - system time!
    1. unsigned seed = time(0);  //system time in seconds since 1/1/1970
    2. srand(seed);  //seed the RNG
  4. get a random number in the desired range
    1. int num = (rand() % (MAX_VALUE - MIN_VALUE + 1)) + MIN_VALUE;

The program should:

  • contain header comments as shown in class
  • display a "hello" message (more descriptive than shown in sample)
  • generate a random number between 1 - 100
  • display the number back to the user
  • determine which quartile the number falls in (using any combination of if, else, and else if)
  • display the quartile back to the user
  • display a "goodbye" message (more descriptive than shown in sample)

SAMPLE OUTPUT: (changes every time program is run...)
Hello.
Random number generated: 3737 falls in the second quartile (26 - 50)
Goodbye.

 

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