simple c++ calculator code example
Example 1: 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;
}
Example 2: how to make a calculator in c++
#include <iostream>
using namespace std;
void greetings() {
cout << "welcome to the calculator made in c++ :D\n";
}
void instructions() {
cout << "Here is the operators you can use + - / *\n";
}
int main()
{
greetings();
instructions();
int num1, num2;
char op;
int result;
char again = 'Y';
while (again == 'y' || again == 'Y') {
cout << "\nEnter your first digit: ";
cin >> num1;
cout << "\nEnter your operator digit: ";
cin >> op;
cout << "\nEnter your second digit: ";
cin >> num2;
if (op == '+') {
result = num1 + num2;
}
else if (op == '-') {
result = num1 - num2;
}
else if (op == '*') {
result = num1 * num2;
}
else if (op == '/') {
result = num1 / num2;
}
else {
cout << "Invalid operator";
}
cout << "= " << result;
cout << "\nDo you want to restart the calculator? (Y or N)";
cin >> again;
}
system("pause>0");
return 0;
}