rounding off outputs

I am making this program for a fake store that will take the price of an item and add it to the other items you put in and then multiply by sales tax. I was just wondering how i could round everything off to the 100th. For example, if the price of the item was 1.25 and that was all they bought, 1.25 * .0825 is 1.66562. I would like it to read 1.67. Here is the code so far.

Code:

---


#include <iostream>

using namespace std;

main()
{
        const float SALESTAX = .0825;
        float totalprice;
        float totalpricewithouttax;
        float item1;
        float item2;
        float item3;
        float item4;
        float item5;

        cout<<"Enter the price of an item: ";
        cin>> item1;
       
        if (item1 < 0) {
                cout<<"You must enter a price";
                return 1;
}

        if (item1 > 0) {
                cout<<"If this is the only item being bought, enter 0.  If not, enter the price for item 2: ";
}
        cin>> item2;

        if (item2 == 0) {
                totalpricewithouttax= item1;
                totalprice= (item1) * (item1 + SALESTAX);
        cout<< "The price is "<< totalpricewithouttax<< endl;
        cout<< "The total ammount due is "<< totalprice << endl;
}
}

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Use the fixed and setprecision() manipuators in your cout. Be sure to include <iomanip>.

ie... cout << fixed << setprecision(2) << "The price is.....

fixed will force the output in fixed (vs scientific) format, as well as force the trailing zeros to be displayed. setprecision() sets how many decimal points.

> was just wondering how i could round everything off to the 100th.

Code:

---

#include <iomanip>
.
.
    cout << "The price is "<< fixed << setprecision(2) << totalpricewithouttax<< endl;

---

Or without using the <iomanip> header:

Code:

---

float fVar;
...
cout.precision(2);
cout.flags(ios::fixed);
cout << fVar;

---

Edit: damn! beaten.

Hi,
You can try something like this. It is crude, but effective.

roundedNumber = int (fabs(originalNumber) * 100 + 0.5) / 100