help with class

[moot1]

the error is on line ,12, how do i fix them...they are expected unqualified-id before '}' token ,and expected `,' or `;' before '}' token and, expected declaration before '}' token

#include <iostream>

using namespace std;

class setup{
    public:
    void setupandtitle(){
         cout << "hello";
         }
         }
    
};

int main()
{
    int a;
    int b;
    char cchar;
    char again;
    
    do{
    system("CLS");
    
    cout << "please enter the first number you want to use" << endl;
    cin >> int a;
    cout << "please enter the number you would like to use" << endl;
    cin >> cchar;
    cout >> "please enter the second number you would like to use" << endl;
    cin >> int b;
    
    switch (cchar){
           
           case '+':
                cout << "the answer is: " << dnumber1 << " + " << dnumber2 << " = "
                << (dnumber1 + dnumber2) << endl;
                break;
           case '-':
                cout << "the answer is: " << dnumber1 << " - " << dnumber2 << " = "
                << (dnumber1 - dnumber2) << endl;
                break;
           case '*':
                cout << "the answer is: " << dnumber1 << " * " << dnumber2 << " = "
                << (dnumber1 * dnumber2) << endl;
                break;
           case '/':
                cout << "the answer is: " << dnumber1 << " / " << dnumber2 << " = "
                << (dnumber1 / dnumber2) << endl;
                break;
           default:
                cout << "you cant use that operation";
                break;
                }
                cout << "would you like to start again (y or n)";
           cin >> cagain;
           }while (cagain == 'y' || cagain == 'Y');
           
    system("pause");
    return 0;
}

    

[Moschops]

class setup{
    public:
    void setupandtitle(){
         cout << "hello";
         }
         }
    
};

Try counting the braces. What exactly is that last brace closing?

[moot1]

oh thanks

[moot1]

ok it works now but why doesnt it print "hello!!!, IM A CALCULATOR... lets get started"????

#include <iostream>

using namespace std;

class setup{
    public:
    void title(){
         cout << "hello!!!, IM A CALCULATOR... lets get started" << endl << endl;
         }
};
    


int main()
{
    system("TITLE calculator");
    system("color 2");
    double a;
    double b;
    char cchar;
    char cagain;
    
    do{
    system("CLS");
    
    cout << "please enter the first number you want to use" << endl;
    cin >> a;
    cout << "please enter the number you would like to use" << endl;
    cin >> cchar;
    cout << "please enter the second number you would like to use" << endl;
    cin >> b;
    
    switch (cchar){
           
           case '+':
                cout << "the answer is: " << a << " + " << b << " = "
                << (a + b) << endl;
                break;
           case '-':
                cout << "the answer is: " << a << " - " << b << " = "
                << (a - b) << endl;
                break;
           case '*':
                cout << "the answer is: " << a << " * " << b << " = "
                << (a * b) << endl;
                break;
           case '/':
                cout << "the answer is: " << a << " / " << b << " = "
                << (a / b) << endl;
                break;
           default:
                cout << "you cant use that operation";
                break;
                }
                cout << "would you like to start again (y or n)";
           cin >> cagain;
           }while (cagain == 'y' || cagain == 'Y');
           
    system("pause");
    return 0;
}

[Zhuge]

You seem to misunderstand the point of classes. But the technical reason is because you never create a setup object and call the title() method anywhere.

[moot1]

what dont i get about classes and i dont get what you mean. And im not trying to make cllases useful im trying to learn them..

[Auda]

just add the following in begging of main()
and wil work correctoly.

setup setapp1;
setup.title()

[moot1]

i did that and this error came up. and can you explain that to me 17 expected primary-expression before '.' token

#include <iostream>

using namespace std;

class setup{
    public:
    void title(){
         cout << "hello!!!, IM A CALCULATOR... lets get started" << endl << endl;
         }
};
    


int main()
{
    setup setapp1;
    setup.title();
    system("TITLE calculator");
    system("color 2");
    double a;
    double b;
    char cchar;
    char cagain;
    
    do{
    system("CLS");
    
    cout << "please enter the first number you want to use" << endl;
    cin >> a;
    cout << "please enter the number you would like to use" << endl;
    cin >> cchar;
    cout << "please enter the second number you would like to use" << endl;
    cin >> b;
    
    switch (cchar){
           
           case '+':
                cout << "the answer is: " << a << " + " << b << " = "
                << (a + b) << endl;
                break;
           case '-':
                cout << "the answer is: " << a << " - " << b << " = "
                << (a - b) << endl;
                break;
           case '*':
                cout << "the answer is: " << a << " * " << b << " = "
                << (a * b) << endl;
                break;
           case '/':
                cout << "the answer is: " << a << " / " << b << " = "
                << (a / b) << endl;
                break;
           default:
                cout << "you cant use that operation";
                break;
                }
                cout << "would you like to start again (y or n)";
           cin >> cagain;
           }while (cagain == 'y' || cagain == 'Y');
           
    system("pause");
    return 0;
}

    

[Moschops]

The name of your created object is setapp1


setup.title();
should be
setapp1.title();

[moot1]

i did that and it still wont print what i have in the class

#include <iostream>

using namespace std;

class setup{
    public:
    void title(){
         cout << "hello!!!, IM A CALCULATOR... lets get started" << endl << endl;
         }
};
    


int main()
{
    setup setapp1;
    setapp1.title();
    system("TITLE calculator");
    system("color 2");
    double a;
    double b;
    char cchar;
    char cagain;
    
    do{
    system("CLS");
    
    cout << "please enter the first number you want to use" << endl;
    cin >> a;
    cout << "please enter the number you would like to use" << endl;
    cin >> cchar;
    cout << "please enter the second number you would like to use" << endl;
    cin >> b;
    
    switch (cchar){
           
           case '+':
                cout << "the answer is: " << a << " + " << b << " = "
                << (a + b) << endl;
                break;
           case '-':
                cout << "the answer is: " << a << " - " << b << " = "
                << (a - b) << endl;
                break;
           case '*':
                cout << "the answer is: " << a << " * " << b << " = "
                << (a * b) << endl;
                break;
           case '/':
                cout << "the answer is: " << a << " / " << b << " = "
                << (a / b) << endl;
                break;
           default:
                cout << "you cant use that operation";
                break;
                }
                cout << "would you like to start again (y or n)";
           cin >> cagain;
           }while (cagain == 'y' || cagain == 'Y');
           
    system("pause");
    return 0;
}

    

[Moschops]

i did that and it still wont print what i have in the class

It does on mine (once I rip out those systems).

[jim80y]

Line 26 is clearing the screen, which will happen pretty quickly after your title message has been displayed.

[moot1]

ok thx