When users enter currency values as criteria, they do NOT need to type the dollar sign
Indicate whether the statement is true or false
TRUE
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Develop an application that calculates a restaurant bill (Fig. 9.27). When the user clicks the Add Items JButton, the user should be able to enter the item ordered, the quantity of the item ordered and the price of the item. To do this, three input dialogs will be displayed per item. The user can enter exactly three items. Once all three items have been entered, your application should display the number ordered, the item ordered and the price per unit in three JTextAreas. The event handler should then calculate and display the total price. For each set of input, the item’s information will be appended to the JTextAreas. Display all prices with dollar formats (that is, preceded by a dollar sign and with two digits to the right of the decimal point). Notice that
a) Copying the template to your working directory. Copy the directory C:Examples Tutorial09ExercisesRestaurantBill to your C:SimplyJava directory.
b) Opening the template file. Open the RestaurantBill.java file in your text editor. c) Adding the do…while loop to the addJButtonActionPerformed event handler.
Beginning in line 130, add a do…while statement that will loop three times. Use an
int variable called counter to control the loop.
d) Adding code to the do…while loop. Within the do…while loop, write three state- ments that display input dialogs (using the JOptionPane.showInputDialog method) to retrieve the quantity, name and price of an item, respectively. Use the value of variable counter in the input dialog prompts to indicate that the user is inputting information for the first, second or third item. Convert the result of the quantity input dialog to type int and the result of the price input dialog to type dou- ble. Use JTextArea meth
What does this program do?
// What does this program do? #includeusing namespace std; void mystery1( char *, const char * ); // prototype int main() { char string1[ 80 ]; char string2[ 80 ]; cout << "Enter two strings: "; cin >> string1 >> string2; mystery1( string1, string2 ); cout << string1 << endl; } // end main // What does this function do? void mystery1( char *s1, const char *s2 ) { while ( *s1 != '\0' ) ++s1; for ( ; *s1 = *s2; s1++, s2++ ) ; // empty statement } // end function mystery1
Where possible, determine the number of significant digits for the following numbers:
1203
Which of the following is a component of software?
A. Application Software B. Compilers C. System Development Life Cycle D. CPU E. Payroll system