C++ help.

im supposed to right a program that figures out the change for a customer. i have everything else written, but i can get to finish the formulas to give me the change in dollars, quarters, nickles, dimes, and pennies. Im supposed to assume that the consumer will only pay with whole dollars.

for example, if the change is $1.58, it should give results such as this.

1 dollar coin(s)
2 quarter(s)
0 dime(s)
1 nickel(s)
3 penny(ies)

does anyone know whow i can do this?

im supposed to right a program that figures out the change for a customer. i have everything else written, but i can get to finish the formulas to give me the change in dollars, quarters, nickles, dimes, and pennies. Im supposed to assume that the consumer will only pay with whole dollars.

for example, if the change is $1.58, it should give results such as this.

1 dollar coin(s)
2 quarter(s)
0 dime(s)
1 nickel(s)
3 penny(ies)

does anyone know whow i can do this?

candid_llama

I can do it, but not in C++

If you want, i cant write in C#

Let me know...

Use the "mod" function. 1.58 mod 1 = 1, so 1 dollar. Then mod the remainder with quarters.... .58 mod .25 = 2... extra... get it?

int total = 1.54;
int dollars = mod(total,1);
total=total-1*dollars;
int quarters = mod(total,.25);
total=total-.25*quarters;
int nickels = mod(total,.05);
total=total-.05*nickels;
int pennies= total / .01;

If you can't figure out how to get the mod function to work with non-integer values, then multiply everything by 100... ie: 1.58=158. Hope I just did your HW for you :P

Its been awhile since I've programmed but if you write a loop that first checks the largest monetary value then works its way ot the smallest amount until no number is left.

Use the largest demonination possible(1 dollar) you cant any more then subtract that from the total, and repeat with the smaller coins until you have nothing left.

make sure you restart the loop after the largest denomitor is used up

After reading this back ot myslef it doesn't make too much sense but I hope this helps.

if the change is 158

while change != 0

if change>=100 then

while change>=100

change=change-100

dolar=dolar+1

break off and start over

if change>=25 then

while change>=25

change=change-25

quarter++

break

and go on with the rest of the change amounts.

thats generally how i I would do it minus the sytanx but you would probably get the idea.

or you could do it with the mod function like the guy above said ;)

While you deffinetly can use the mod function (and some others), here is another way. It's more visual so you can see what going on...

private string GetChange(decimal dCost, decimal dAmountGiven)
{

int iTenBill = 0;
int iFiveBill = 0;
int iOneBill = 0;
int iQuater = 0;
int iDime = 0;
int iNickle = 0;
int iPenny = 0;
decimal dRemainder = dAmountGiven - dCost;
string sChange = "";

sChange = "Amount is change: " + dRemainder.ToString;

while (dRemainder >= 10) {
iTenBill = iTenBill + 1;
dRemainder = dRemainder - 10;
}

while (dRemainder >= 5) {
iFiveBill = iFiveBill + 1;
dRemainder = dRemainder - 5;
}

while (dRemainder >= 1) {
iOneBill = iOneBill + 1;
dRemainder = dRemainder - 1;
}

while (dRemainder >= 0.25) {
iQuater = iQuater + 1;
dRemainder = dRemainder - 0.25;
}

while (dRemainder >= 0.1) {
iDime = iDime + 1;
dRemainder = dRemainder - 0.1;
}

while (dRemainder >= 0.05) {
iNickle = iNickle + 1;
dRemainder = dRemainder - 0.05;
}

while (dRemainder >= 0.01) {
iPenny = iPenny + 1;
dRemainder = dRemainder - 0.01;
}

sChange = sChange + Constants.vbCrLf + Constants.vbCrLf;
sChange = sChange + "Tens: " + iTenBill.ToString + Constants.vbCrLf;
sChange = sChange + "Fives: " + iFiveBill.ToString + Constants.vbCrLf;
sChange = sChange + "Ones: " + iOneBill.ToString + Constants.vbCrLf;
sChange = sChange + "Quarters: " + iQuater.ToString + Constants.vbCrLf;
sChange = sChange + "Dimes: " + iDime.ToString + Constants.vbCrLf;
sChange = sChange + "Nickles: " + iNickle.ToString + Constants.vbCrLf;
sChange = sChange + "Pennies: " + iPenny.ToString + Constants.vbCrLf;

return sChange;

}

Anyways, good luck. My suggestion is to look into the mod and other functions after you understand how this works.

LMAO, this is a strange place to post such a question.

Anyway you want to successively subtract values starting with larger denominations

while (change >= 5)
{
change -= 5;
fives++;
}

while (change >= 1)
{
change -= 1;
singles++;
}

while (change >= 0.25)
{
change -= 0.25;
quarters++;
}

...

and so on.

Why would you do loops, when you can do it linearly using the 'mod' function? Loops should always be last resort. I don't know how you are going to be graded, but even high school teachers, i presume, would mark off if you used a loop in this situation.rimnet00

Well the loops allow him to understand the actual process of whats going on. If its an beginner couse which is it sounds like it is, it is important to have that more basic understanding.

The mod function is more efficient waying of doing though..

Yeah the loop code is pretty messy, but try to think about programming problems thoroughly before you ask for help, because programming is all about solving problems, and that's what you're supposed to learn in a programming course (that and the language but...) and you won't do that asking for help as soon as you run into trouble.kyrieee

Thats why I showed him the loop...so he can understand the logic. People don't just pop out of school avid programmers. You start at square one, and once you understand the logic, then you can take the short cuts.

If he can't even figure out the logic behind giving change, you think taking shortcuts with mod functions makes it any easier? He is at square one...he needs to learn accordingly.

Yeah the loop code is pretty messy, but try to think about programming problems thoroughly before you ask for help, because programming is all about solving problems, and that's what you're supposed to learn in a programming course (that and the language but...) and you won't do that asking for help as soon as you run into trouble.kyrieee

I was highly surprised that he didn't post an algorithm.......If I ever need help I'll email my cousin the algorithm and the code I got so far.