fork download
copy 
  1. // Chapter 4 - Programming Challenge #19
  2. // The Speed of Sound in Gases
  3. // This program allows the user to select a gas and enter
  4. // the amount of time sound traveled through that gas.
  5. // It then calculates and displays the distance the sound
  6. // traveled in meters.
  7.  
  8. #include <iostream>
  9. using namespace std;
  10.  
  11. int main()
  12. {
  13.     // Constants for the speed of sound in each gas
  14.     const double CARBON_DIOXIDE = 258.0;
  15.     const double AIR = 331.5;
  16.     const double HELIUM = 972.0;
  17.     const double HYDROGEN = 1270.0;
  18.  
  19.     // Variables for the user's choice, time, speed, and distance
  20.     int choice;
  21.     double time, speed, distance;
  22.  
  23.     // Display the gas menu
  24.     cout << "Select a gas:" << endl;
  25.     cout << "1. Carbon Dioxide" << endl;
  26.     cout << "2. Air" << endl;
  27.     cout << "3. Helium" << endl;
  28.     cout << "4. Hydrogen" << endl;
  29.     cout << "Enter your choice: ";
  30.     cin >> choice;
  31.  
  32.     // Check that the user entered a valid menu choice
  33.     if (choice < 1 || choice > 4)
  34.     {
  35.         cout << "Invalid choice." << endl;
  36.         return 0;
  37.     }
  38.  
  39.     // Get the travel time from the user
  40.     cout << "Enter the time in seconds: ";
  41.     cin >> time;
  42.  
  43.     // Check that the time is between 0 and 30 seconds
  44.     if (time < 0 || time > 30)
  45.     {
  46.         cout << "Invalid time." << endl;
  47.         return 0;
  48.     }
  49.  
  50.     // Determine the speed of sound for the selected gas
  51.     switch (choice)
  52.     {
  53.         case 1:
  54.             speed = CARBON_DIOXIDE;
  55.             break;
  56.  
  57.         case 2:
  58.             speed = AIR;
  59.             break;
  60.  
  61.         case 3:
  62.             speed = HELIUM;
  63.             break;
  64.  
  65.         case 4:
  66.             speed = HYDROGEN;
  67.             break;
  68.     }
  69.  
  70.     // Calculate the distance traveled
  71.     distance = speed * time;
  72.  
  73.     // Display the calculated distance
  74.     cout << "The sound traveled " << distance
  75.          << " meters." << endl;
  76.  
  77.     return 0;
  78. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Select a gas:
1. Carbon Dioxide
2. Air
3. Helium
4. Hydrogen
Enter your choice: Invalid choice.
https://ideone.com/PdIZFE
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!