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Asking User If they want to run program again

GrewalCreator (5)
I have this calculator program and i need to ask the user if they want to run it again, right now when i say no it will stop, but when i say yes it just ends, how can i fix this?
Also when the operation input is not valid, the program treats it as r = false, says goodbye and ends when it is supposed to run the program again
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 #include <iostream>

using namespace std;

void calculator(bool r);
void run_again(bool r);


int main()

{
    bool r;

    do{
        calculator(r);
        run_again(r);
        
    }while(r == true);
    return 0;
}
void calculator(bool r){
    
    float variable1;
    float variable2;
    char operation;
    float answer;
    
    cout << "Enter First Number: ";
    cin >> variable1;
    cout << "Enter Second Number: ";
    cin >> variable2;
    cout << "What would you like to do with these numbers? " << endl;
    cout << "Options: +, -, *, /, M (to get max value between 2 numbers), m(to get min value): ";
    cin >> operation;
    
    
    switch(operation){
    case '+':
        answer = variable1 + variable2;
        cout << "Answer is: ";
        cout << answer << endl;
        break;
    case '-':
        answer = variable1 - variable2;
        cout << "Answer is: ";
        cout << answer << endl;
        break;
    case '*':
        answer = variable1 * variable2;
        cout << "Answer is: ";
        cout << answer << endl;
        break;
    case '/':
        answer = variable1 / variable2;
        cout << "Answer is: ";
        cout << answer << endl;
        break;
    case 'M':
        answer = max(variable1, variable2);
        cout << "Answer is: ";
        cout << answer << endl;
        break;
    case 'm':
        answer = min(variable1, variable2);
        cout << "Answer is: ";
        cout << answer << endl;
        break;
    default:
        cout << "Not An Option";
        r = true;
        break;
        
}
        
    
}

void run_again(bool r)
{
   string s;
   
   cout<<"Do you want to run again (yes or no):"<<endl;
   cin >> s;
   if(s == "yes") {
      r = true;
   }
   else {
       cout << "Goodbye";
      r = false;
   }
}
Last edited on
againtry (2313)
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#include <iostream>

using namespace std;

void calculator();
bool run_again();

int main()

{
    bool r{true};

    do{
        calculator();
        r = run_again();

    }while(r == true);

    return 0;
}

void calculator(){

    float variable1;
    float variable2;
    char operation;
    float answer;

    cout << "Enter First Number: ";
    cin >> variable1;
    cout << "Enter Second Number: ";
    cin >> variable2;
    cout << "What would you like to do with these numbers? " << endl;
    cout << "Options: +, -, *, /, M (to get max value between 2 numbers), m(to get min value): ";
    cin >> operation;


    switch(operation){
        case '+':
            answer = variable1 + variable2;
            cout << "Answer is: ";
            cout << answer << endl;
            break;
        case '-':
            answer = variable1 - variable2;
            cout << "Answer is: ";
            cout << answer << endl;
            break;
        case '*':
            answer = variable1 * variable2;
            cout << "Answer is: ";
            cout << answer << endl;
            break;
        case '/':
            answer = variable1 / variable2;
            cout << "Answer is: ";
            cout << answer << endl;
            break;
        case 'M':
            answer = max(variable1, variable2);
            cout << "Answer is: ";
            cout << answer << endl;
            break;
        case 'm':
            answer = min(variable1, variable2);
            cout << "Answer is: ";
            cout << answer << endl;
            break;
        default:
            cout << "Not An Option";
            break;
    }
}

bool run_again()
{
    string s;
    bool r;
    cout<<"Do you want to run again (yes or no):"<<endl;
    cin >> s;
    if(s == "yes") {
        r = true;
    }
    else {
        r = false;
    }

    return r;
}
GrewalCreator (5)
Thanks, but this didnt solve the issue of rerunning the program when the input is not an option in the swtich statement
againtry (2313)
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bool run_again()
{
    string prompt{"Do you want to run again (yes or no): "};
    string s;
    while(
          cout << prompt &&
          cin >> s &&
          ( s != "yes" && s != "no" )
          )
    {
        cout << s << ' ' << "Wrong answer\n";
    }

    if(s == "yes"){ return true;}
    else return false;
}


Enter First Number: 1
Enter Second Number: 2
What would you like to do with these numbers? 
Options: +, -, *, /, M (to get max value between 2 numbers), m(to get min value): +
Answer is: 3
Do you want to run again (yes or no): w
w Wrong answer
y
y Wrong answer
yes
Enter First Number: 2
Enter Second Number: 3
What would you like to do with these numbers? 
Options: +, -, *, /, M (to get max value between 2 numbers), m(to get min value): +
Answer is: 5
Do you want to run again (yes or no): mmm
mmm Wrong answer
m
m Wrong answer
no
Program ended with exit code: 0
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