Question

Write a function DrivingCost with input parameters drivenMiles, milesPerGallon, and dollarsPerGallon, that returns the dollar cost to drive those miles. All items are of type double. If the function is called with 5020.03 .1599, the function returns 7.89975 .

Define that function in a program whose inputs are the car's miles/gallon and the gas dollars/gallon (both doubles). Output the gas cost for 10 miles, 50 miles, and 400 miles, by calling your DrivingCost function three times.

Output each floating-point value with two digits after the decimal point, which can be achieved as follows: printf("%0.2lf", yourValue);

Ex: If the input is:

20.0 3 .1599

the output is:

1.58 7.90 63.20

Your program must define and call a function:

double Drivingcost(double drivenMiles, double milesPerGallon, double dollarsPerGallon)

Note: This is a lab from a previous chapter that now requires the use of a function.

Write a function Driving Cost with input parameters driven Miles, milesPerGallon, and dollarsPerGallon, that returns the doll


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Answer #1

C++ code for computing driving cost

#include
using namespace std;
double DrivingCost(double drivenMiles, double milesPerGallon, double dollarsPerGallon)
{
return (drivenMiles/milesPerGallon)*dollarsPerGallon;
}
int main()
{
double milespg=20.0;
double dollarsGallon=3.1599;
  
cout<<" driving cost for 10 miles "< cout<<" driving cost for 50 miles "< cout<<" driving cost for 400 miles "<   
return 0;
}

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Answer #2

Coral


Function DrivingCost(float drivenMilesIn, float milesPerGallon, float dollarsPerGallon) returns float cost

      

   cost = (drivenMilesIn / milesPerGallon) * dollarsPerGallon

      

   

Function Main() returns nothing

   float milesPerGallon

   float dollarsPerGallon

   float array(3) drivenMiles

   float drivenMilesIn

   integer i

   

   milesPerGallon = Get next input

   dollarsPerGallon = Get next input

   

   drivenMiles[0] = 10

   drivenMiles[1] = 50

   drivenMiles[2] = 400

   

   for i = 0; i < drivenMiles.size; i = i + 1

      drivenMilesIn = drivenMiles[i]

      if i == drivenMiles.size - 1

         Put DrivingCost(drivenMilesIn, milesPerGallon, dollarsPerGallon) to output with 2 decimal places

         

      else

         Put DrivingCost(drivenMilesIn, milesPerGallon, dollarsPerGallon) to output with 2 decimal places

         Put " " to output


answered by: Jason Keim
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