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  1. // Cenyao Huang                             CS1A                         Homework 5, p. 224, #20
  2.  
  3. /******************************************************************************************************
  4. * DISPLAY FREEZING AND BOILING SUBSTANCES
  5. * 
  6. * This program displays what substances will freeze and boil at the specific  
  7. * temperature inputted. 
  8. *
  9. * Input
  10. * temp : the value of the temperature entered
  11. *
  12. * Output 
  13. * It will display the substances that will boil and freeze at that temperature
  14. *
  15. ****************************************************************************************************/
  16.  
  17. #include <iostream>
  18. #include <string>
  19. using namespace std;
  20.  
  21. int main() {
  22.  
  23.     // assign variables
  24.     float temp; 
  25.     int count = 0;
  26.  
  27.     // ask for and display temperature
  28. 	cout << "Please enter a temperature in fahrenheit: ";
  29.     cin >> temp; 
  30.     cout << temp << "°F" << endl;
  31.  
  32.     // display substances that will boil
  33. 	if (temp >=172) {
  34. 	   cout << "Ethyl alcohol will boil." << endl;
  35.        count += 1;
  36. 	}
  37.     if (temp >=676) {
  38.        cout << "Mercury will boil." << endl;
  39.        count += 1;
  40.     }
  41.     if (temp >= -306) {
  42.        cout << "Oxygen will boil." << endl;
  43.        count += 1;
  44.     }
  45.     if (temp >= 212) {
  46.        cout << "Water will boil." << endl;
  47.        count += 1;
  48.     }
  49.  
  50.     // display substances that will freeze
  51.     if (temp <= -173) {
  52.        cout << "Ethyl alcohol will freeze." << endl;                    
  53.        count+=1;
  54.     }
  55.     if (temp <= -38) {
  56.        cout << "Mercury will freeze." << endl;
  57.        count+=1;
  58.     }
  59.     if (temp <= -362) {
  60.        cout << "Oxygen will freeze."<< endl;
  61.        count+=1;
  62.     }
  63.     if (temp <= 32) {
  64.        cout << "Water will freeze." << endl;
  65.        count+=1;
  66.     }
  67.  
  68.      // display message if none of the substances boil or freeze
  69. 	 if (count == 0) 
  70.        cout << "None of the substances will boil or freeze at this temperature.";
  71.  
  72. 	return 0;
  73. }
Success #stdin #stdout 0s 5328KB
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-10
stdout
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Please enter a temperature in fahrenheit: -10°F
Oxygen will boil.
Water will freeze.
https://ideone.com/0gjGie
freezing and boiling points- ch4
language:
C++ (gcc 8.3)
created:
15 hours ago
visibility:
public

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