Make simple programs start over.

I just started to learn C++ and I am using Dev-C++ and the command window never stayed open after the programs finished until I added the pause. Is there a way for the program to start it self over after I insert the feet so I don't have to keep reopening it?

Code:

---

#include <iostream>
using namespace std;

int main() {
    double f;// feet
    double m; // meters
   
    cout << "Enter the length in feet: " ;
    cin >> f; // reads number of feet
   
    m = f / 3.28; //Converts feet to meters
    cout << f << " feet is " << m << " meters.\n" ;
    system("pause");
    return 0;
}

---

You want to read a tutorial about loops.

You could do something real simple n' sloppy like that below though I wouldn't call it the proper method.

Code:

---

#include <iostream>
using namespace std;

    double f=1;
    double m; // meters
   
int main() {
 while (f!=0)
 {
    cout << "Enter the length in feet: " ;  //0 to exit
    cin >> f; // reads number of feet
   
    m = f / 3.28; //Converts feet to meters
    cout << f << " feet is " << m << " meters.\n" ;
    cin.get();
 }
    return 0;
}

---

or you could use an infinite for loop:

Code:

---

#include <iostream>
using namespace std;

int main() {
    for (;;)
    {
        double f;// feet
        double m; // meters
   
        cout << "Enter the length in feet: " ;
        cin >> f; // reads number of feet
   
        m = f / 3.28; //Converts feet to meters
        cout << f << " feet is " << m << " meters.\n" ;
        system("pause");
    }
    return 0;
}

---

if you want a clean display again add system("cls"); after system("pause");

Less system calls. system() is unsafe, I am pretty sure there is a FAQ why. Use std::cin.get();

When i want something to ask me do i want to start again i use a simple loop

Code:

---

while (again == 'y')
{
                cout<<"Do you want to play again? (y/n)"<<endl;
        cin>>again;

}

---

Just wrap it around your whole program, im sure i will get slated for this method but it works and if it aint broke dont fix it!

Code:

---

#include <iostream>
using namespace std;

int main() {

while (again == 'y')
{
   
    for (;;)
    {
        double f;// feet
        double m; // meters
   
        cout << "Enter the length in feet: " ;
        cin >> f; // reads number of feet
   
        m = f / 3.28; //Converts feet to meters
        cout << f << " feet is " << m << " meters.\n" ;
        system("pause");
    }
 cout<<"Do you want to play again? (y/n)"<<endl;
        cin>>again;

}
    return 0;
}

---

I don't see anything wrong with that method; except I don't see where again was actually declared. Otherwise, it looks like a clean and simple loop. Of course, I've been wrong so many times before!