I'll assume the question is "what is the output of the above program?"
Explanation:
First, I'll arrange the program in lines
using System;
using static System.Console;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace AMPCh02Ex04 {
class Program { static void Main(string[] args) {
int quarters, dimes, nickels, pennies, change = 15974;
WriteLine("Change = " + $"{(double)change / 100:C}");
quarters = change / 25;
change %= 25;
dimes = change / 10;
change %= 10;
nickels = change / 5;
change %= 5;
pennies = change;
WriteLine("Quarters = " + quarters);
WriteLine("Dimes = " + dimes);
WriteLine("Nickels = " + nickels);
WriteLine("Pennies = " + pennies);
ReadKey();
} } }
Explanation starts here
This line below declares integer variables. Variable changed is initialised to 15974
int quarters, dimes, nickels, pennies, change = 15974;
The line below divides 15974 as a double variable by 100 and displays the results as a currency.
WriteLine("Change = " + $"{(double)change / 100:C}");
The output is "Change = $15.974" without the quotes
quarters = change/25.
This divides 15974 by 25 and saves only the integer part to variable quarter. So
quarter = 638
change %= 25;
This calculates the remainder of 15974 divided by 25. The result is stored in variable change. So,
change = 24
dimes = change / 10;
This calculates the division of 24 by 10. The integer part of the result is stored in variable dimes. So,
dimes = 2
change %= 10;
This calculates the remainder of 24 divided by 10. The result is stored in variable change. So,
change = 4
nickels = change / 5;
This calculates the division of 4 by 5. The integer part of the result is stored in variable nickels. So,
nickels = 0
change %= 5;
This calculates the remainder of 4 divided by 5. The result is stored in variable change. So,
change = 4
pennies = change;
pennies = 4
WriteLine("Quarters = " + quarters);
"Quarters = 638" is printed without the quotes
WriteLine("Dimes = " + dimes);
"Dimes = 2" is printed without the quotes
WriteLine("Nickels = " + nickels);
"Nickels = 0" is printed without the quotes
WriteLine("Pennies = " + pennies);
"Pennies = 4" is printed without the quotes
