**C++ Basic Programs**

➤ Hello World! in C++

➤ Print Number in C++

➤ Add 2 Numbers C++

➤ Arithmetic Operation

➤ Sum Avg of 3 Number

➤ Area Program in C++

➤ Simple Interest in C++

➤ Find ASCII value in C++

➤ Swap 2 Number in C++

**Flow Control Programs**

➤ Even-Odd in C++

➤ +ve, -ve, 0 in C++

➤ Vowel-Consonant

➤ Greatest of 3 no.

➤ Check Leap Year

➤ Calculator Program

➤ Reverse a Number

➤ Sum of Natural Number

➤ GCD of 2 Number

➤ LCM of 2 Number

➤ Find Power in C++

➤ Fibonacci Series in C++

➤ Palindrome Number

➤ Find Factorial in C++

➤ Factorial Using Recursion

➤ Prime Number in C++

➤ Prime Number b/w 1-N

**Array**

➤ Linear Search in C++

➤ Binary Search in C++

**Others**

➤ Introduction to C++

➤ Data Types in C++

➤ Range of Data Types

➤ Void main, main vs int main

In this post, we will develop the C++ program to add subtract multiply and divide two numbers. We will solve this problem in three ways,

1) **Simple** C++ program for addition, subtraction, multiplication, and division operations

2) C++ program for addition, subtraction, multiplication, and division **using the function**

3) C++ program for addition, subtraction, multiplication, and division **using class and object**

First, we will develop a Simple C++ program to solve this problem, then we will use the function concept, and later we will use class and object concept to perform addition, subtraction, multiplication, and division operations.

## Simple C++ Program to Add Subtract Multiply and Divide Two Numbers

let us begin with a simple C++ program to add subtract multiply and divide two numbers.

`#include<iostream>`
using namespace std;
int main()
{
// declare variables
double num1, num2;
// take input from end-user
cout << "Enter two Numbers :: ";
cin >> num1 >> num2;
// addition of two number
cout << num1 << "+" << num2 << " = "<< num1+num2 << endl;
// subtraction of two number
cout << num1 << "-" << num2 << " = "<< num1-num2 << endl;
// multiplication of two number
cout << num1 << "*" << num2 << " = "<< num1*num2 << endl;
// division of two number
cout << num1 << "/" << num2 << " = "<< num1/num2 << endl;
return 0;
}

**Output:-**

Enter two Number: 20 5

20+5 = 25

20-5 = 15

20*5 = 100

20/5 = 4

In this C++ Program to add subtract divide and multiply two numbers, we define two variables **num1** and **num2** to store the data entered by the user. Sum, subtraction, multiplication and division are calculated as **num1 + num2**, **num1 – num2**, **num1 * num2** and **num1 / num2** respectively.

The modulus operator (%) does not work with float data types. So, we can’t write num1 % num2. To find the remainder, data types shouldn’t be the

## C++ Program for Addition, Subtraction, Multiplication, and Division Using the Function

A function is a block of code that performs a specific task. For example, the main is function and every program execution starts from main function in C++ programming.

`#include<iostream>`
using namespace std;
// function declaration
double add(double n1, double n2);
double subtract(double n1, double n2);
double multiply(double n1, double n2);
double divide(double n1, double n2);
// main function
int main()
{
// declare variables
double num1, num2;
// take input from end-user
cout << "Enter two Numbers :: ";
cin >> num1 >> num2;
// addition of two number
cout << "Addition = "<< add(num1, num2) << endl;
// subtraction of two number
cout << "Subtraction = "<< subtract(num1, num2) << endl;
// multiplication of two number
cout << "Multiplication = "<< multiply(num1, num2) << endl;
// division of two number
cout << "Division = "<< divide(num1, num2) << endl;
return 0;
}
// function to add two numbers
double add(double n1, double n2)
{
return n1+n2;
}
// function to subtract two numbers
double subtract(double n1, double n2)
{
return n1-n2;
}
// function to multiply two numbers
double multiply(double n1, double n2)
{
return n1*n2;
}
// function to divide two numbers
double divide(double n1, double n2)
{
return n1/n2;
}

Output:-

Enter two Numbers :: 45.2 5.3

Addition = 50.5

Subtraction = 39.9

Multiplication = 239.56

Division = 8.5283

## C++ Program for Addition, Subtraction, Multiplication, and Division Using Class and Object

`#include<iostream>`
using namespace std;
class Arithmetic {
public:
// function to add two numbers
double add(double n1, double n2)
{
return n1+n2;
}
// function to subtract two numbers
double subtract(double n1, double n2)
{
return n1-n2;
}
// function to multiply two numbers
double multiply(double n1, double n2)
{
return n1*n2;
}
// function to divide two numbers
double divide(double n1, double n2)
{
return n1/n2;
}
};
int main()
{
// declare variables
double num1, num2;
// declare object of Arithmetic class
Arithmetic ar;
// take input from end-user
cout << "Enter two Numbers :: ";
cin >> num1 >> num2;
// addition of two number
cout << "Addition = "<< ar.add(num1, num2) << endl;
// subtraction of two number
cout << "Subtraction = "<< ar.subtract(num1, num2) << endl;
// multiplication of two number
cout << "Multiplication = "<< ar.multiply(num1, num2) << endl;
// division of two number
cout << "Division = "<< ar.divide(num1, num2) << endl;
return 0;
}

Output:-

Enter two Numbers :: 10 5

Addition = 15

Subtraction = 5

Multiplication = 50

Division = 2

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RahulHow to do all while taking the user’s choice of as to what operation to perform.

VikasIn that case this post can help you:- Calculator Program in C++. It is an example of a C++ program, which asks two numbers and operators from the end-user and displays the result. The second program will keep executing until the user does not choose the exit option.