FAKULTI SAINS KOMPUTER DAN TEKNOLOGI MAKLUMAT JABATAN TEKNOLOGI KOMUNIKASI DAN RANGKAIAN
C++ PROGRAMMING
SKR3306
LAB ASSIGNMENT 3 REPORT
| NAME | : MUHAMMAD ABDUL SHAHID BIN HASRI |
| MATRIC NO. | : 194086 |
| Lab 3.1: Working with the cin Statement |
Task 1 ( Coding )
// MUHAMMAD ABDUL SHAHID BIN HASRI
#include <iostream> #include <iomanip> using namespace std;
int main() {
int quantity; // contains the amount of items purchased
float itemPrice; // contains the price of each item
float totalBill; // contains the total bill.
cout << setprecision(2) << fixed << showpoint; // formatted output cout << “Please input the number of items bought : ” << endl ;
cin >> quantity ;
cout << “Please put price of each item : ” << endl << “RM ” ;
cin >> itemPrice ;
totalBill = quantity*itemPrice ;
cout << “The total bill is :RM ” << totalBill ;
return 0; }
Task 2 ( Output )
Task 3 ( OUTPUT )
The function of fixed is represented the result as many digits in the decimal part as specified by the precision field precision) and with no exponent part.
Task 4 ( OUTPUT )
The function of setprecision() is sets the decimal precision to be used to format floating-point values on output operations. If we want 2 decimal place, just put 2 in the bracket, example
setprecision(2);
Task 5 ( OUTPUT )
| Lab 3.2: Formatting Output |
CODING AND OUTPUT
#include <iostream> #include <iomanip>
#include <stdio.h>// Fill in the code to bring in the library for #include <string>
// formatted output.
using namespace std;
int main() {
float price1, price2; // The price of 2 items
int quantity1, quantity2; // The quantity of 2 items cout << setprecision(2) << fixed << showpoint;
cout << “Please input the price and quantity of the first item” << endl; cin >> price1 >> quantity1 ;
cout << “Please input the price and quantity of the second item” << endl; cin >> price2 >> quantity2 ;
cout << setw(15) << “PRICE” << setw(12) <<“QUANTITY\n\n”;
cout << setw(15) << price1 << setw(7) << quantity1 << endl ;
cout << setw(15) << price2 << setw(7) << quantity2 ;
return 0;
}
 Lab 3.3: Arithmetic Operations Math |
Task 2 ( Coding & Output )
#include <iostream>
#include <iomanip>
#include <cmath> // needed for math functions like sqrt() using namespace std;
int main() {
| int a,b,c; | // the smaller two sides of the triangle |
| float hyp; | // the hypotenuse calculated by the program |
cout << setprecision(5) << fixed << showpoint;
cout << “Please input the value of the two sides” << endl;
cin >> a >> b;
c = pow(a,2)+ pow(b,2) ;
hyp = sqrt(c);
cout << “The sides of the right triangle are ” << a << ” and ” << b << endl; cout << “The hypotenuse is ” << hyp << endl;
return 0;
}
Task 3 ( Coding & Output )
#include <cmath> // needed for math functions like sqrt()
using namespace std;
int main() {
int a,b,c; // the smaller two sides of the triangle
float hyp; // the hypotenuse calculated by the program
cout << setprecision(2) << fixed << showpoint;
cout << “Please input the value of the two sides” << endl;
cin >> a >> b;
c = pow(a,2)+ pow(b,2) ;
hyp = sqrt(c);
cout << “The sides of the right triangle are ” << a << ” and ” << b << endl; cout << “The hypotenuse is ” << hyp << endl;
return 0; }
| Lab 3.4: Working with Type Casting |
using namespace std; const int AT_BAT = 421; const int HITS = 123;
int main()
{
}
int batAvg;
batAvg = HITS / AT_BAT ; // an assignment statement
cout << “The batting average is ” << batAvg << endl; // output the result return 0;
using namespace std;
const float AT_BAT = 421;
const float HITS = 123;
int main() {
float batAvg;
batAvg = HITS / AT_BAT ; // an assignment statement
cout << “The batting average is ” << batAvg << endl; // output the result return 0;
}
Does changing the data type of batavg from int to float solve the problem? NO
using namespace std;
const int AT_BAT = 421;
const int HITS = 123;
int main() {
float batAvg;
batAvg = static_cast<float>(HITS) / static_cast <float>(AT_BAT) ;
cout << “The batting average is ” << batAvg << endl; // output the result return 0;
}
| Lab 3.5: Reading and Writing to a File |
TASK 2 (OUTPUT)
TASK 3 ( CODING & OUTPUT )
#include <fstream> #include <iomanip> using namespace std;
int main() {
ifstream dataIn;
ofstream dataOut;
int quantity;
float itemPrice;
float totalBill;
dataIn.open(“transaction.dat”);
dataOut.open(“bill.out”);
dataOut << setprecision(2) << fixed << showpoint; dataIn >> quantity >> itemPrice;
totalBill = quantity*itemPrice;
dataOut << The total bill is << totalBill;
return 0;
}
| Lab 3.6: Student Generated Code Exercises |
Option 1
#include <iostream> #include <iomanip> #include <string>
using namespace std;
int main() {
float grade1’ grade2’ grade3;
float averageGrade;
cout << setprecision (2) << fixed << showpoint;
cout << “Please input the first grade” << endl;
cin >> grade1;
cout << “Please input the second grade” << endl;
cin >> grade2;
cout << “Please input the third grade” << endl;
cin >> grade3;
averageGrade = (grade1 + grade2 + grade3)/ 3;
cout << “The average of the three grades is ” << averageGrade << endl;
return 0;
}
OPTION 2
#include <iostream> #include <iomanip> #include <string>
using namespace std;
int main() {
int chair1, chair2, chair3;
float totalSales1, totalSales2, totalSales3, totalAll;
cout << setprecision (2) << fixed << showpoint;
cout << “Please input the number of American Colonial chairs sold” << endl; cin >> chair1;
cout << “Please input the number of Modern chairs sold” << endl;
cin >> chair2;
cout << “Please input the number of French Classical chairs sold” << endl; cin >> chair3;
totalSales1 = chair1 * 85.00;
totalSales2 = chair2 * 57.50;
totalSales3 = chair3 * 127.75;
totalAll = totalSales1 + totalSales2 + totalSales3;
cout << “The total sales of American Colonial chairs $” << totalSales1 << endl; cout << “The total sales of Modern chairs $” << totalSales2 << endl;
cout << “The total sales of French Classical chairs $” << totalSales3 << endl; cout << “The total sales of all chairs $” << totalAll << endl;
return 0; }
OPTION 3
#include <iostream> #include <iomanip> #include <string>
using namespace std;
int main() {
float totalSales, stateTax, localTax;
float totalStateTax, totalLocalTax;
cout << setprecision (2) << fixed << showpoint;
cout << “Please input the total sales for the month” << endl;
cin >> totalSales;
cout << “Please input the state tax percentage in decimal form (.02 for 2%)” << endl; cin >> stateTax;
cout << “Please input the local tax percentage in decimal form (.02 for 2%)” << endl; cin >> localTax;
totalStateTax = totalSales * stateTax;
totalLocalTax = totalSales * localTax;
cout << “The total sales of the month is $” << totalSales << endl;
cout << “The state tax for the month is $” << totalStateTax << endl;
cout << “The local tax for the month is $” << totalLocalTax << endl;
return 0; }
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