cpp calculator code example

Example 1: c++ calculator script

#include <iostream>

using namespace std;

int main()
{
cout << "Welcome to the Calculator, write :cancel: to cancel the calculator\n";
 string cancel;

 while(cancel != "cancel")
 {
     int number1 = 0;
     int number2 = 0;
     string op;

     cout << "please enter your first number!\n";

     cin >> number1;

     cout << "please enter your second number!\n";

     cin >> number2; 

     cout << "please enter a operator!\n";
     cout << "( *, / , + , - )";

     cin >> op;
    
    if(op == "*")
    {
        number1 = number1 * number2;
        cout << number1; 
        number1 = 0;
        number2 = 0;
    }

    if(op == "/")
    {
        number1 = number1 / number2;
        cout << number1;
        number1 = 0;
        number2 = 0;
    }

    if(op == "+")
    {
        number1 = number1 + number2; 
        cout << number1;
        number1 = 0;
        number2 = 0;
    }

    if(op == "-")
    {
        number1 = number1 - number2;
        cout << number1; 
        number1 = 0; 
        number2 = 0;
    }
    
    cout << "Write cancel to cancel\n";
    cout << "write continue to resume with the calculator!\n";
    
    cin >> cancel;

 }
  
  
}
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Example 2: calculator with c++

#include <iostream>
using namespace std;

int main()
{
	int choice;

	cout << 1 << endl;
	cout << 2 << endl;
	cout << 3 << endl;
	cout << 4 << endl;

	cout << "Choice A Number: ";
	cin >> choice;

	if (choice >= 1 && choice <= 4)
	{
		int a, b;

		cout << "Enter Num One: ";
		cin >> a;
		cout << "Enter Num Two: ";
		cin >> b;

		if (choice == 1)
			cout << a << "+" << b << "=" << a + b << endl;
		if (choice == 2)
			cout << a << "-" << b << "=" << a - b << endl;
		if (choice == 3)
			cout << a << "*" << b << "=" << a * b << endl;
	}
	else
	{
		cout << "Wrong Choice" << endl;
	}
}

Example 3: c++ calculator

#include <iostream>
using namespace std;

int main() {
    char setOperator;
    float firstNum = 0.00, secondNum = 0.00;
    cout << "Enter your operater: +, -, *, /:  \n";
    cin >> setOperator;
    cout << "Enter your first calculation:  \n";
    cin >> firstNum;
    cout <<  "Enter your second calculation:  \n";
    cin >> secondNum;
    
    switch(setOperator) {
        case '+':
        cout << "The answer is: " <<firstNum + secondNum;
        break;
        
        case '-':
        cout << "The answer is:" << firstNum - secondNum;
        break;
        
        case '*':
        cout << "The answer is: " << firstNum * secondNum;
        break;
        
        case '/':
        cout << "The answer is: " << firstNum / secondNum;
        break;
    }
    return 0;
}