Tuesday, July 16, 2024
Monday, July 15, 2024
Simple Calculator Using Abstraction in C++
Program Listing
#include <iostream>
// Abstract class for calculator operations
class Operation {
public:
virtual double calculate(double a, double b) = 0;
};
// Concrete subclasses for each operation
class Addition : public Operation {
public:
double calculate(double a, double b) override {
return a + b;
}
};
class Subtraction : public Operation {
public:
double calculate(double a, double b) override {
return a - b;
}
};
class Multiplication : public Operation {
public:
double calculate(double a, double b) override {
return a * b;
}
};
class Division : public Operation {
public:
double calculate(double a, double b) override {
if (b == 0) {
std::cerr << "Error: Division by zero is not allowed." << std::endl;
return 0; // Return 0 as an error value
}
return a / b;
}
};
int main() {
double num1, num2;
char operation;
std::cout <<"\n\n\tSimple Calculator Using Abstraction in C++\n";
std::cout << "\n\tGive two numbers: ";
std::cin >> num1 >> num2;
std::cout << "\tEnter the operation (+, -, *, /): ";
std::cin >> operation;
Operation* op = nullptr;
switch (operation) {
case '+':
op = new Addition();
break;
case '-':
op = new Subtraction();
break;
case '*':
op = new Multiplication();
break;
case '/':
op = new Division();
break;
default:
std::cerr << "\tError: Invalid operation." << std::endl;
return 1;
}
double result = op->calculate(num1, num2);
std::cout << "\n\tThe Result: " << result << std::endl;
std::cout << "\n\n\tEnd of Program. Thank you for using this program." << std::endl;
delete op;
return 0;
}
Sunday, July 14, 2024
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Friday, July 12, 2024
Thursday, July 11, 2024
Difference of Two Numbers in C
#include <stdio.h>
int main()
{
int a=0,b=0,difference=0;
printf("\n\n");
printf("\tDifference of Two Numbers in C");
printf("\n\n");
printf("\tGive Two Numbers : ");
scanf("%d%d",&a,&b);
/* Compute the Difference of Two Numbers */
difference = (a - b);
printf("\n\n");
printf("\t===== DISPLAY RESULTS =====");
printf("\n\n");
printf("\tThe difference between %d and %d is %d.",a,b,difference);
printf("\n\n");
printf("\tEnd of Program");
printf("\n");
}
Wednesday, July 10, 2024
Student Record System in C++
Program Listing
#include <iostream>
#include <string>
class Student {
public:
// Constructor to initialize the student's information
Student(std::string name, int rollNumber, double marks) {
this->name = name;
this->rollNumber = rollNumber;
this->marks = marks;
}
// Function to display the student's information
void displayInfo() {
std::cout << "\n\tStudent Name: " << name << std::endl;
std::cout << "\tRoll Number: " << rollNumber << std::endl;
std::cout << "\tMarks: " << marks << std::endl;
}
private:
std::string name;
int rollNumber;
double marks;
};
int main() {
std::string name;
int rollNumber;
double marks;
// Input student information
std::cout <<"\n";
std::cout << "\tEnter student's name: ";
std::cin >> name;
std::cout << "\tEnter roll number: ";
std::cin >> rollNumber;
std::cout << "\tEnter marks: ";
std::cin >> marks;
// Create a Student object with the provided information
Student student(name, rollNumber, marks);
char choice;
do {
std::cout << "\n\tStudent Record Main Menu\n" << std::endl;
std::cout << "\t[1] Display student information" << std::endl;
std::cout << "\t[2] Quit Program" << std::endl;
std::cout << "\tEnter your choice: ";
std::cin >> choice;
if (choice == '1') {
// Display the student's information
student.displayInfo();
} else if (choice != '2') {
std::cout << "\n\tInvalid choice. Please try again." << std::endl;
}
} while (choice != '2');
std::cout << "\n\tEnd of Program. Thank you for using this program." << std::endl;
return 0;
}