Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Concept explainers

Operations
In mathematics and computer science, an operation is an event that is carried out to satisfy a given task. Basic operations of a computer system are input, processing, output, storage, and control.
Basic Operators
An operator is a symbol that indicates an operation to be performed. We are familiar with operators in mathematics; operators used in computer programming are—in many ways—similar to mathematical operators.
Division Operator
We all learnt about division—and the division operator—in school. You probably know of both these symbols as representing division:
Modulus Operator
Modulus can be represented either as (mod or modulo) in computing operation. Modulus comes under arithmetic operations. Any number or variable which produces absolute value is modulus functionality. Magnitude of any function is totally changed by modulo …
Operators
In the realm of programming, operators refer to the symbols that perform some function. They are tasked with instructing the compiler on the type of action that needs to be performed on the values passed as operands. Operators can be used in mathematical…
Question
The language is C++. The picture is my program and and the bottom it shows my output. I need the output to look like the other picture and the numbers on top includes the input for the number of people, the average slice each person would eat and the cost of each pizza. I want any number to work for this program so what exactly am i doing wrong that my output is coming out like that.
main.cpp 8 9 #include <iostream> 10 #include <iomanip> 11 #include <cmath> 12 using namespace std; 13 14 int main() { 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 //Constants and Variables int numOfPeople 0; int pizza; double avgSlices = 0.0, costOfPizza 0.0; double TAX_RATE=0.07, DELIVERY_FEE = 0.2; double subTotal = 0.0, total = 0.0, weekTotal = 0.0, tax = 0.0, fee = 0.0; double deliveryCost = 0.0; //Input for Friday cin >> numOfPeople >> avgSlices >> costOfPizza >> pizza; 44 } 45 //Calculate subTotal = (numOfPeople avgSlices costOfPizza) / 8; tax = subTotal * TAX_RATE; deliveryCost = tax+ DELIVERY_FEE; total subTotal + deliveryCost; pizza = ceil((numOfPeople* avgSlices) / 8); //Output for Friday cout << "Friday Night Party" << endl; cout << fixed << setprecision (2) << subTotal << tax << fee <<< total; cout << fixed <<setprecision(0) << pizza; cout << pizza <<< " Pizzas: " subTotal << endl; cout << "Tax: " << tax << endl; cout << "Delivery: cout << "Total: << total << endl; return 0; << fee << endl; input Compiled Successfully. memory: 3568 time: 0.26 exit code: 0 Friday Night Party 34.122.390.0036.7144 Pizzas: 34 Tax: 2 Delivery: 0 Total: 37 ste
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Transcribed Image Text:main.cpp 8 9 #include <iostream> 10 #include <iomanip> 11 #include <cmath> 12 using namespace std; 13 14 int main() { 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 //Constants and Variables int numOfPeople 0; int pizza; double avgSlices = 0.0, costOfPizza 0.0; double TAX_RATE=0.07, DELIVERY_FEE = 0.2; double subTotal = 0.0, total = 0.0, weekTotal = 0.0, tax = 0.0, fee = 0.0; double deliveryCost = 0.0; //Input for Friday cin >> numOfPeople >> avgSlices >> costOfPizza >> pizza; 44 } 45 //Calculate subTotal = (numOfPeople avgSlices costOfPizza) / 8; tax = subTotal * TAX_RATE; deliveryCost = tax+ DELIVERY_FEE; total subTotal + deliveryCost; pizza = ceil((numOfPeople* avgSlices) / 8); //Output for Friday cout << "Friday Night Party" << endl; cout << fixed << setprecision (2) << subTotal << tax << fee <<< total; cout << fixed <<setprecision(0) << pizza; cout << pizza <<< " Pizzas: " subTotal << endl; cout << "Tax: " << tax << endl; cout << "Delivery: cout << "Total: << total << endl; return 0; << fee << endl; input Compiled Successfully. memory: 3568 time: 0.26 exit code: 0 Friday Night Party 34.122.390.0036.7144 Pizzas: 34 Tax: 2 Delivery: 0 Total: 37 ste
10 2.6 The output is: Friday Night Party 4 Pizzas: $42.00 Tax: $2.94 A 10.50 Delivery: $8.99 Total: $53.93 F2 9 F3 F4 % 5
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Transcribed Image Text:10 2.6 The output is: Friday Night Party 4 Pizzas: $42.00 Tax: $2.94 A 10.50 Delivery: $8.99 Total: $53.93 F2 9 F3 F4 % 5
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