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  1. //Natalie Zarate                   CIS 5                  Chapter 4, P. 222, #18
  2.  
  3. /*******************************************************************************
  4.  * 
  5.  * COMPUTE SPEED OF SOUND
  6.  * _____________________________________________________________________________
  7.  * This program computes the time it will take for sound to through steel, air 
  8.  * in ft/sec with the distance traveled and the medium (air, water or steel) 
  9.  * specified by the user.
  10.  *
  11.  * Computation will be based on the following:
  12.  * - The speed of sound through air is 1,100 ft/sec
  13.  * - The speed of sound through water is 4,900 ft/sec
  14.  * - The speed of sound through steel is 16,400 ft/sec
  15.  * - Distance must be > 0
  16.  * _____________________________________________________________________________
  17.  * INPUT
  18.  *   mediumchoice : Choice of medium 
  19.  *   steelSpeed   : Speed that sound travels through steel
  20.  *   airSpeed     : Speed that sound travels through air
  21.  *   waterSpeed   : Speed that sound travels through water
  22.  *   distance     : Distance the sound will travel
  23.  *   
  24.  * OUTPUT
  25.  *   timeTravel  : Time it took for sound to travel
  26.  * 
  27.  ******************************************************************************/
  28.  #include <iostream>
  29.  #include <iomanip>
  30.  using namespace std;
  31.  
  32. int main() 
  33. {
  34. 	/*********************************************************************
  35. 	 * CONSTANTS
  36. 	 * -------------------------------------------------------------------
  37.      * steelSpeed   : Speed that sound travels through steel
  38.      * airSpeed     : Speed that sound travels through air
  39.      * waterSpeed   : Speed that sound travels through water
  40.      ********************************************************************/
  41.  
  42.      const float steelSpeed = 16400;
  43.      const float airSpeed = 1100;
  44.      const float waterSpeed = 4900;
  45.  
  46.      char mediumchoice; // INPUT - Choice of medium 
  47.      float distance;    // INPUT - Distance sound will travel
  48.      float timeTravel;   // Output - Time it takes for sound to travel
  49.  
  50.   // Promt user for medium selection
  51.      cout << "What is sound travelling through?" << endl;
  52.      cout << "Please select from the following:" << endl;
  53.      cout << "A - Air" << endl << "B - Water" << endl << "C - Steel" << endl;
  54.      cin >> mediumchoice;
  55.  
  56.   // Validate input and prompt for distance
  57.      switch (mediumchoice)
  58.      {
  59.      	case 'A': cout << "How far will the sound travel in feet?" << endl;
  60.      	          cin >> distance;
  61.      	          break;
  62.      	case 'B': cout << "How far will the sound travel in feet?" << endl;
  63.      	          cin >> distance;
  64.      	          break;
  65.      	case 'C': cout << "How far will the sound travel in feet?" << endl;
  66.      	          cin >> distance;
  67.      	          break;
  68.      	default : cout << "Enter A, B, or C:" << endl;
  69.      	          cin >> mediumchoice;
  70.      }
  71.  
  72.   // Validate Distance
  73.      if (distance <= 0)
  74.         cout << "Distance muts be greater than 0 feet!" << endl;
  75.   // Compute time traveled 
  76.      switch (mediumchoice)
  77.      {
  78.      	case 'A': timeTravel = distance / airSpeed;
  79.                   break;
  80.         case 'B': timeTravel = distance / waterSpeed;
  81.                   break;
  82.         case 'C': timeTravel = distance / steelSpeed;
  83.                   break;
  84.      }
  85.   // Display compuation
  86.      cout << "It will take " << setprecision(4) << timeTravel;
  87.      cout << " seconds for sound to travel " << distance << " feet in ";
  88.      switch (mediumchoice)
  89.      {
  90.      	case 'A': cout << "air."; 
  91.      	          break;
  92.         case 'B': cout << "water.";
  93.                   break;
  94.         case 'C':cout << "steel";
  95.                   break;
  96.      }
  97. 	return 0;
  98. }
Success #stdin #stdout 0.01s 5284KB
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stdin
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B
300
stdout
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What is sound travelling through?
Please select from the following:
A - Air
B - Water
C - Steel
How far will the sound travel in feet?
It will take 0.06122 seconds for sound to travel 300 feet in water.
https://ideone.com/LndH8b
Ch 4 #18
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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