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  1. // Torrez, Elaine                         CS1A                     Chapter 2 P. 81, #1
  2.  
  3. /******************************************************************************************
  4.  *
  5.  * CALCULATE MILES PER GALLON
  6.  *
  7.  * --------------------------------------------------------------------------------
  8.  * This program calculates a car’s gas mileage. It uses the number of gallons of 
  9.  * gas the car can hold and the number of miles it can be driven on a full tank. 
  10.  * The program then calculates and displays the number of miles per gallon.
  11.  * --------------------------------------------------------------------------------
  12.  *
  13.  * INPUT
  14.  *      gallons        : Number of gallons of gas the car can hold
  15.  *      miles          : Number of miles the car can be driven on a full tank
  16.  *
  17.  * OUTPUT
  18.  *      mpg            : Miles per gallon of gas
  19.  *
  20.  *******************************************************************************************/
  21.  
  22. #include <iostream>
  23. #include <iomanip>     // Included for fixed and setprecision
  24. using namespace std;
  25.  
  26. int main ()
  27. {
  28.     double gallons;    // INPUT number of gallons the tank holds
  29.     double miles;      // INPUT number of miles the car can drive on a full tank
  30.     double mpg;        // OUTPUT miles per gallon
  31.  
  32.     // Hardcoded test values (change if needed)
  33.     gallons = 12;    
  34.     miles   = 144;     
  35.  
  36.     // Calculate miles per gallon
  37.     mpg = miles / gallons;
  38.  
  39.     // Format and display result
  40.     cout << fixed << setprecision(1);
  41.     cout << miles << " miles / " << gallons << " gallons = "
  42.          << mpg << " miles per gallon." << endl;
  43.  
  44.     return 0;
  45. }
  46.  
Success #stdin #stdout 0s 5316KB
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Standard input is empty
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144.0 miles / 12.0 gallons = 12.0 miles per gallon.
https://ideone.com/fPasBm
language:
C++ (gcc 8.3)
created:
11 hours ago
visibility:
public

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