1// This is for beginners
2
3#include <iostream>
4
5using namespace std;
6
7void greetings() {
8 cout << "welcome to the calculator made in c++ :D\n";
9}
10
11void instructions() {
12 cout << "Here is the operators you can use + - / *\n";
13}
14
15int main()
16{
17 greetings();
18 instructions();
19 int num1, num2;
20 char op;
21 int result;
22 char again = 'Y';
23
24 while (again == 'y' || again == 'Y') {
25
26
27
28 cout << "\nEnter your first digit: ";
29 cin >> num1;
30
31 cout << "\nEnter your operator digit: ";
32 cin >> op;
33
34 cout << "\nEnter your second digit: ";
35 cin >> num2;
36
37 if (op == '+') {
38 result = num1 + num2;
39 }
40 else if (op == '-') {
41 result = num1 - num2;
42 }
43 else if (op == '*') {
44 result = num1 * num2;
45 }
46 else if (op == '/') {
47 result = num1 / num2;
48 }
49 else {
50 cout << "Invalid operator";
51 }
52
53 cout << "= " << result;
54 cout << "\nDo you want to restart the calculator? (Y or N)";
55 cin >> again;
56 }
57
58 system("pause>0");
59
60 return 0;
61}
1#include <iostream>
2
3using namespace std;
4
5int main()
6{
7cout << "Welcome to the Calculator, write :cancel: to cancel the calculator\n";
8 string cancel;
9
10 while(cancel != "cancel")
11 {
12 int number1 = 0;
13 int number2 = 0;
14 string op;
15
16 cout << "please enter your first number!\n";
17
18 cin >> number1;
19
20 cout << "please enter your second number!\n";
21
22 cin >> number2;
23
24 cout << "please enter a operator!\n";
25 cout << "( *, / , + , - )";
26
27 cin >> op;
28
29 if(op == "*")
30 {
31 number1 = number1 * number2;
32 cout << number1;
33 number1 = 0;
34 number2 = 0;
35 }
36
37 if(op == "/")
38 {
39 number1 = number1 / number2;
40 cout << number1;
41 number1 = 0;
42 number2 = 0;
43 }
44
45 if(op == "+")
46 {
47 number1 = number1 + number2;
48 cout << number1;
49 number1 = 0;
50 number2 = 0;
51 }
52
53 if(op == "-")
54 {
55 number1 = number1 - number2;
56 cout << number1;
57 number1 = 0;
58 number2 = 0;
59 }
60
61 cout << "Write cancel to cancel\n";
62 cout << "write continue to resume with the calculator!\n";
63
64 cin >> cancel;
65
66 }
67
68
69}
70//powered by my coding server: https://discord.gg/GUgnYHJV
1#include <iostream>
2using namespace std;
3
4int main()
5{
6 int choice;
7
8 cout << 1 << endl;
9 cout << 2 << endl;
10 cout << 3 << endl;
11 cout << 4 << endl;
12
13 cout << "Choice A Number: ";
14 cin >> choice;
15
16 if (choice >= 1 && choice <= 4)
17 {
18 int a, b;
19
20 cout << "Enter Num One: ";
21 cin >> a;
22 cout << "Enter Num Two: ";
23 cin >> b;
24
25 if (choice == 1)
26 cout << a << "+" << b << "=" << a + b << endl;
27 if (choice == 2)
28 cout << a << "-" << b << "=" << a - b << endl;
29 if (choice == 3)
30 cout << a << "*" << b << "=" << a * b << endl;
31 }
32 else
33 {
34 cout << "Wrong Choice" << endl;
35 }
36}
1#include <iostream>
2
3using namespace std;
4
5int main()
6{
7int num1;
8int num2;
9char op;
10
11 cout << "Enter a number:" << endl;
12 cin >> num1; //takes input
13
14 cout << "Enter another number:" << endl; //prints some prompt
15 cin >> num2;
16
17 cout << "Enter a operator:" << endl; //prints some prompt
18 cin >> op;
19
20 if(op == '+')
21 {
22 cout << "Result = " << num1 + num2 << endl;
23 }else if(op == '-'){
24 cout << "Result = " << num1 - num2 << endl;
25 }else if(op == '*'){
26 cout << "Result = " << num1 * num2 << endl;
27 }else if(op == '/'){
28 cout << "Result = " << num1 / num2 << endl;
29 }
30
31
32}