009_Nov22

November 22

Control Statement

1. if else statement
2. Switch
3. Loop
4. Jump

Fblock

1. if
   1. checks single condition only
2. if..... else
   1. checks dual condition only
3. if... else if.... else
   1. checks more than 2 condition

Classwork

1. Checks if the input number is positive or not

#include <iostream>

using namespace std;

int main() {
    int a;

    cout << "Enter a number: ";
    cin >> a;

    if(a > 1) {
        cout << "number is positive";
    } 

    return 0;
}

Output

> Enter a number: 10
> Number is positive

2. check if input numbers is positive or negative

#include <iostream>

using namespace std;

int main() {
    int a;

    cout << "Enter a number: ";
    cin >> a;

    if(a > 1 && a != 0) {
        cout << "number is positive";
    } else {
        cout << "number is negative";
    }

    return 0;
}

Output

> Enter a number: -10
> Number is negative

3. checks if the input number is positive, negative or zero

#include <iostream>

using namespace std;

int main() {
    int a;

    cout << "Enter a number: ";
    cin >> a;

    if(a == 0) {
        cout << "number is zero";
    } else if( a < 1) {
        cout << "number is negative";
    } else {
        cout << "number is positive";
    }

    return 0;
}

Output

> Enter a number: 0
> Number is zero

4. enter the marks of five subjects and find the total marks, percentage and grades using classes

#include <iostream>

using namespace std;

class marks {
    public:
        double english, nepali, account, maths, computer;
        double totalMarks, percentage;

        void getMarks() {
            cout << "Enter the marks of English: ";
            cin >> english;
            cout << "Enter the marks of Nepali: ";
            cin >> nepali;
            cout << "Enter the marks of Account: ";
            cin >> account;
            cout << "Enter the marks of Maths: ";
            cin >> maths;
            cout << "Enter the marks of Computer: ";
            cin >> computer;
        }

        void calcTotal() {
            totalMarks = english + maths + nepali + computer + account;
            cout << "Total Marks of all subject = " << totalMarks << endl;
        }

        void calcPercentage() {
            percentage = (totalMarks / 500) * 100;
        }

        void showGrades() {
            if (percentage >= 90) {
                cout << "Grades = A+";
            } else if (percentage < 90 && percentage >= 80) {
                cout << "Grades = A";
            } else if (percentage < 80 && percentage >= 70) {
                cout << "Grades = B+";
            } else if (percentage < 70 && percentage >= 60) {
                cout << "Grades = B";
            } else if (percentage < 60 && percentage >= 50) {
                cout << "Grades = C+";
            } else if (percentage < 50 && percentage >=40 ) {
                cout << "Grades = C";
            } else {
                cout << "FAIL";
            }
        }
};

int main() {
        marks mk;

        mk.getMarks();
        mk.calcTotal();
        mk.calcPercentage();
        mk.showGrades();

        return 0;
}

Output

> Enter the marks of English: 92
> Enter the marks of Nepali: 92
> Enter the marks of Account: 92
> Enter the marks of Maths: 92
> Enter the marks of Computer: 92
> Total marks of all subject = 460
> Grade = A+

Assignment

1. Enter values of length and breadth of a rectangle from user and check if it is square or not.

#include <iostream>

using namespace std;

class rect {
    public:
        int length, breath;

        void getData() {
            cout << "Enter the length of the rectriangle: ";
            cin >> length;
            cout << "Enter the breath of the rectriangle: ";
            cin >> breath;
        }

        void checkShape() {
            if(length == breath) {
                cout << "It is a square!";
            } else {
                cout << "It is a rectriangle!";
            }
        }
};

int main() {
        rect rt;

        rt.getData();
        rt.checkShape();

        return 0;
}

Output

> Enter the length of the rectriangle: 10 
> Enter the breath of the rectriangle: 10
> It is a square!

2. A shop will give discount of 10% if the cost of purchased quantity is more than 1000. Ask user for quantity. Suppose, one unit will cost 100. Judge and print total cost for user.

#include <iostream>

using namespace std;

class product {
    public:
        double quantity, total, discount;
        double perUnit = 100;

        void getQuantity() {
            cout << "Enter the quantity of product you want to buy: ";
            cin >> quantity;
        }

        void calcTotal() {
            total = quantity * perUnit;
            
            if (total <= 1000) {
                cout << "Total Cost = Rs. " << total;
            } else if (total > 1000) {
                discount = 0.1 * total;
                cout << "Total Cost = Rs. " << total - discount;
            } else {
                cout << "Invalid Input!";
            }
        }
};

int main() {
        product pd;

        pd.getQuantity();
        pd.calcTotal();

        return 0;
}

Output

> Enter the quantity of product you want to buy: 9
> Total Cost = Rs. 900

3. A company decided to give bonus of 5% to employee if his/her year of service is more than 5 years. Ask user for their salary and year of service and print the net bonus amount.

#include <iostream>

using namespace std;

class employee {
    public:
        double salary, time;
        double bonus;

        void getData() {
            cout << "Enter your salary: ";
            cin >> salary;
            cout << "Enter the year of service in this organization: ";
            cin >> time;
        }

        void calcBonus() {
            if(time > 5.0) {
                bonus = 0.05 * salary;
                cout << "Bonus = " << bonus;
            } else if(time < 5.0) {
                cout << "Bonus = 0";
            } else {
                cout << "Invalid Input!";
            }
        }
};

int main() {
        employee ep;

        ep.getData();
        ep.calcBonus();

        return 0;
}

Output

> Enter your salary: 20000
> Enter the year of service in this organization: 21
> Bonus = 1000

4. check that whether a number is even or odd.

#include <iostream>

using namespace std;

class evenOdd {
    public:
        int num;

        void getInput() {
            cout << "Enter any number: ";
            cin >> num;
        }

        void findEvenOdd() {
            if(num == 0) {
                cout << "Zero";
            } else if(num % 2 == 0) {
                cout << num << " is even number!";
            } else {
                cout << num << " is odd number!";
            }
        }
};

int main() {
        evenOdd eo;

        eo.getInput();
        eo.findEvenOdd();

        return 0;
}

Output

> Enter any number: 4
> 4 is even number!

5. Program to check whether a number is divisible by 5 and 11 or not.

#include <iostream>

using namespace std;

class division {
    public:
        int number;

        void getInput() {
            cout << "Enter any number: ";
            cin >> number;
        }

        void checkCondition() {
            if(number % 5 == 0 && number % 11 == 0) {
                cout << number << " is divisible by 5 and 11!";
            } else {
                cout << number << " is not divisible by 5 and 11!";
            }
        }
};

int main() {
        division n1;

        n1.getInput();
        n1.checkCondition();

        return 0;
}

Output

> Enter any number: 55
> 55 is divisible by 5 and 11!

6. Program to check whether the triangle is an equilateral, isosceles or scalene triangle.

#include <iostream>

using namespace std;

class triangle {
    public:
        double sideOne, sideTwo, sideThree;

        void getSides() {
            cout << "Enter Side One: ";
            cin >> sideOne;
            cout << "Enter Side Two: ";
            cin >> sideTwo;
            cout << "Enter Side Three: ";
            cin >> sideThree;
        }

        void checkTriangle() {
            if(sideOne == sideTwo && sideTwo == sideThree) {
                cout << "Equilateral Triangle";
            } else if(sideOne == sideTwo || sideTwo == sideThree || sideThree == sideOne) {
                cout << "Isosceles Triangle";
            } else {
                cout << "Scalene Triangle";
            }
        }
};

int main() {
        triangle tg;

        tg.getSides();
        tg.checkTriangle();

        return 0;
}

Output

> Enter Side One: 12
> Enter Side Two: 12
> Enter Side Three: 10
> Isosceles Triangle

7. Program to calculate profit or loss.

#include <iostream>

using namespace std;

class profitLoss {
    public:
        double profit, loss;
        double sellingPrice, buyingPrice;

        void getPrices() {
            cout << "Enter the buying price: ";
            cin >> buyingPrice;
            cout << "Enter the selling price: ";
            cin >> sellingPrice;
        }

        void findProfitLoss() {
            if(buyingPrice > sellingPrice) {
                loss = buyingPrice - sellingPrice;
                cout << "Total Loss = Rs. " << loss;
            } else if(buyingPrice < sellingPrice) {
                profit = sellingPrice - buyingPrice;
                cout << "Total profit = Rs. " << profit;
            } else {
                cout << "Neither Profit Nor Loss";
            }
        }
};

int main() {
        profitLoss pl;

        pl.getPrices();
        pl.findProfitLoss();

        return 0;
}

Output

> Enter the buying price: 20000
> Enter the selling price: 21000
> Total Profit: Rs. 1000

8. Program to check whether a year is a leap year or not by using an if-else statement.

#include <iostream>
using namespace std;

class leapYear {
    public: 
        int year;

        void getYear() {
            cout << "Enter a year: ";
            cin >> year;
        }

        int calcLeapYear() {
            if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
                cout << year << " is a leap year.";
            }
        else {
            cout << year << " is not a leap year.";
        }
        return 0;
    }
};

int main() {
    leapYear lp;

    lp.getYear();
    lp.calcLeapYear();

    return 0;
}

9. program that checks whether the character is an alphabet or not.

#include <iostream>

using namespace std;

class alphabet {
    public:
        char word;

        void getInput() {
            cout << "Enter any character: ";
            cin >> word;
        }

        void findAlphabet() {
            if(word >= 'a' && word <= 'z' || word >= 'A' && word <= 'Z') {
                cout << word << " is Alphabet!";
            } else {
                cout << word << " is not Alphabet!";
            }
        }
};

int main() {
        alphabet ap;

        ap.getInput();
        ap.findAlphabet();

        return 0;
}

Output

> Enter any character: &
> & is not Alphabet!

10. Program to check whether a number is a prime or composite number.

#include <iostream>
using namespace std;

class checkPrimeComposit {
  public:
    int num, count = 0;
    
    void getInput() {
      cout << "Enter any number: ";
      cin >> num;
    }

    void findCondition() {
      for(int i = 1; i <= num; i++) {
        if(num % i == 0) {
          count++;
        }
      }
      if(count == 2) {
        cout << num << " is prime number!";
      } else {
        cout << num << " is a composite number!";
      }
    }
};

int main() {
  checkPrimeComposit pc;

  pc.getInput();
  pc.findCondition();

  return 0;
}

Output

> Enter any number: 7
> 7 is prime number!