【解決方法】式での定数の使用

The cost to ship a package is a flat fee of 75 cents plus 25 cents per pound.
1. Declare a const named CENTS_PER_POUND and initialize with 25.
2. Get the shipping weight from user input storing the weight into shipWeightPounds.
3. Using FLAT_FEE_CENTS and CENTS_PER_POUND constants, assign shipCostCents with the cost of shipping a package weighing shipWeightPounds.

私が試したこと：

int main() {
   
   /* Modify the following code */
   
   int volumeOunces;
   int volumeGallons;
   
   cin >> volumeOunces;
   
   volumeGallons = volumeOunces / 128;
   
   cout << fixed << setprecision(3) << volumeGallons << " gallons" << endl;