Check out example codes for "how to make a calculator inc++". It will help you in understanding the concepts better.

Code Example 1

``````// ONLY 29 LINES OF CODE IN TOTAL
// For better calculator scroll down on this post
#include <iostream>
using namespace std;
int main() {
cout << "Please enter the first number: ";
double n1 = 0;
cin >> n1;
cout << "Please enter an operator (+, -, *, /): ";
char op = '0';
cin >> op;
cout << "Please enter a second number: ";
double n2 = 0;
cin >> n2;
switch (op) {
case '+':
break;
case '-':
break;
case '*':
break;
case '/':
break;
}

// this is the better calculator:

#include <iostream>
#include <Windows.h>
using namespace std;
int main() {
char jim = 'j';
do {

cout << "Please enter the first number: ";
double n1 = 0;
cin >> n1;
cout << "Please enter an operator (+, -, *, /): ";
char op = '0';
cin >> op;
cout << "Please enter a second number: ";
double n2 = 0;
cin >> n2;
switch (op) {
case '+':
break;
case '-':
break;
case '*':
break;
case '/':
break;
}
cout << "Thanks for using my calculator your answer is: " << answer << " do you want to run the program again? (y or n) ";
cin >> jim;

} while (jim = 'y' && jim != 'n');
if (jim = 'n') {
cout << "Thanks for using my calculator here is sum epic music";
Beep(329, 300);
Beep(493, 300);
Beep(698, 300);
Beep(659, 600);

Beep(783, 300);
Beep(698, 300);
Beep(659, 600);

Beep(329, 100);
Beep(493, 300);
Beep(698, 300);
Beep(659, 600);

Beep(392, 250);
Beep(440, 200);
Beep(587, 300);

Beep(349, 250);
Beep(587, 500);

Beep(329, 300);
Beep(493, 300);
Beep(698, 300);
Beep(659, 600);

Beep(783, 300);
Beep(698, 300);
Beep(659, 600);

Beep(329, 100);
Beep(493, 300);
Beep(698, 300);
Beep(659, 600);

Beep(392, 250);
Beep(440, 200);
Beep(587, 300);

Beep(349, 250);
Beep(587, 400);
}
return 0;
}``````

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