How can I add a loop for this code
 

The code is pretty easy to understand what I am doing. You basically pick a number 1-4 and it will do either addition, subtraction, multiplication, or division. What I need it to do is after they do a problem it loops back and lets them do it again, until they enter 5 to end the program.

Thanks.

Here is my code

#include <iostream>

#include <cstdlib>

#include <iomanip>

#include <ctime>



using namespace std;





int main ()



{

        srand((unsigned)time(0)); 

        int add1, add2, sub1, sub2;

        int multiply1, multiply2, div1, div2;

        int choice, input;

        add1 = (rand()%500)+1;

        add2 = (rand()%500)+1; 

        sub1 = (rand()%500)+1;

        sub2 = (rand()%98)+1;

        multiply1 = (rand()%98)+1;

        multiply2 = (rand()%8)+1;

        div1 = (rand()%500)+1;

        div2 = (rand()%8)+1;

        int addAnswer = add1 + add2;

        int subAnswer = sub1- sub2;

        int multiplyAnswer = multiply1 * multiply2;

        int divAnswer = div1 / div2;

                

                



        //Display the menu and get the user's choice

                cout << "         Geometry Calculator \n\n";

                cout << "1. Addition\n";

                cout << "2. Subtraction\n";

                cout << "3. Multiplication\n";

                cout << "4. Division\n";

                cout << "5. Quit\n";

                cout << "\n";



                cout <<"Enter your choice (1-5): ";

                cin >> choice;

                cout << "\n";



                                

if (choice==1)

{

        cout << setw (6) << add1 << endl; 

        cout << "+ ";

        cout << setw (4) << add2 << endl;

        cout << "------";

        cout << "\n";

        cin >> input; 

        cout << "\n";

if 

        (input == addAnswer)

        cout << "Congratulations\n";         

else

        cout << "That is incorrect,\nThe correct answer is: " << addAnswer;

        cout << "\n";

return 0;

}



else if (choice==2)

{

        cout << setw (6) << sub1 << endl; 

        cout << "- ";

        cout << setw (4) << sub2 << endl;

        cout << "------";

        cout << "\n";

        cin >> input; 

        cout << "\n";

if 

        (input == subAnswer)

        cout << "Congratulations\n";         

else

        cout << "That is incorrect,\nThe correct answer is: " << subAnswer;

        cout << "\n";

return 0;}

     

else if (choice==3)

{

        cout << setw (6) << multiply1 << endl; 

        cout << "* ";

        cout << setw (4) << multiply2 << endl;

        cout << "------";

        cout << "\n";

        cin >> input; 

        cout << "\n";

if 

        (input == multiplyAnswer)

        cout << "Congratulations\n";         

else

        cout << "That is incorrect,\nThe correct answer is: " << multiplyAnswer;

        cout << "\n";

return 0;}

     

else if (choice==4)

{

        cout << setw (6) << div1 << endl; 

        cout << "/ ";

        cout << setw (4) << div2 << endl;

        cout << "------";

        cout << "\n";

        cin >> input; 

        cout << "\n";

if 

        (input == divAnswer)

        cout << "Congratulations\n";         

else

        cout << "That is incorrect,\nThe correct answer is: " << divAnswer;

        cout << "\n";

return 0;}

                        

else if (choice==5)

        {cout << "Thanks for playing\n";}



else

        {cout << "You can only select options 1-5, run the program again and select a option 1-5\n";}

     

     

return 0;



}

Re: How can I add a loop for this code
 

Simply..

//...

char rep='n';

//display the menu and get user's choice

while(tolower(rep)=='n')

{

    //...Menu

    cout<<"repeat? [y/n] : ";

    cin>>rep;

}

return 0; //bye..

Re: How can I add a loop for this code
 

[code] while (choice!=5)
{
Your Programme Body

}[\code]

Remember to Intialize Choice With any Number without 5

Re: How can I add a loop for this code
 

Thanks for the help. Would I put that before the else if part of the code? Also the char rep='n'; needs to go at the top where I clarify everything. Also what would I do if I wanted it to either be a capital or lower case y or n?

Thanks.

Re: How can I add a loop for this code
 

 while (choice!=5)

{

Your Programme Body



}

Remember to Intialize Choice With any Number without 5

Re: How can I add a loop for this code
 

What?

Re: How can I add a loop for this code
 

    

      #include <iostream>

   

      #include <cstdlib>

   

      #include <iomanip>

   

      #include <ctime>

   

       

   

      using namespace std;

   

       

   

       

   

      int main ()

         

  

     {

  

      srand((unsigned)time(0));

  

      int add1, add2, sub1, sub2;

  

      int multiply1, multiply2, div1, div2;

  

      int choice=0, input;

  

      add1 = (rand()%500)+1;

  

      add2 = (rand()%500)+1;

  

      sub1 = (rand()%500)+1;

  

      sub2 = (rand()%98)+1;

  

      multiply1 = (rand()%98)+1;

  

     multiply2 = (rand()%8)+1;

  

    div1 = (rand()%500)+1;

  

      div2 = (rand()%8)+1;

  

     int addAnswer = add1 + add2;

  

      int subAnswer = sub1- sub2;

  

      int multiplyAnswer = multiply1 * multiply2;

  

      int divAnswer = div1 / div2;

  

       

  

       

  

          

  

     //Display the menu and get the user's choice

  

      while(choice!=5)

          {

          cout << " Geometry Calculator \n\n";

  

      cout << "1. Addition\n";

  

      cout << "2. Subtraction\n";

  

      cout << "3. Multiplication\n";

  

      cout << "4. Division\n";

  

     cout << "5. Quit\n";

  

      cout << "\n";

  

       

  

      cout <<"Enter your choice (1-5): ";

  

      cin >> choice;

  

      cout << "\n";

  

       

  

       

  

      if (choice==1)

  

      {

  

      cout << setw (6) << add1 << endl;

  

      cout << "+ ";

  

      cout << setw (4) << add2 << endl;

  

      cout << "------";

  

      cout << "\n";

  

      cin >> input;

  

      cout << "\n";

  

      if

  

      (input == addAnswer)

  

      cout << "Congratulations\n";

  

      else

  

      cout << "That is incorrect,\nThe correct answer is: " << addAnswer;

  

      cout << "\n";

  

      return 0;

  

      }

  

       

  

      else if (choice==2)

  

      {

  

      cout << setw (6) << sub1 << endl;

  

      cout << "- ";

  

      cout << setw (4) << sub2 << endl;

  

      cout << "------";

  

      cout << "\n";

  

      cin >> input;

  

      cout << "\n";

  

      if

  

      (input == subAnswer)

  

      cout << "Congratulations\n";

  

      else

  

      cout << "That is incorrect,\nThe correct answer is: " << subAnswer;

  

      cout << "\n";

  

      return 0;}

  

       

  

     else if (choice==3)

  

      {

  

      cout << setw (6) << multiply1 << endl;

  

      cout << "* ";

  

      cout << setw (4) << multiply2 << endl;

  

    cout << "------";

  

      cout << "\n";

  

      cin >> input;

  

      cout << "\n";

  

     if

  

      (input == multiplyAnswer)

 

      cout << "Congratulations\n";

 

      else

 

      cout << "That is incorrect,\nThe correct answer is: " << multiplyAnswer;

 

      cout << "\n";

 

      return 0;}

 

       

 

      else if (choice==4)

 

      {

 

      cout << setw (6) << div1 << endl;

 

      cout << "/ ";

 

      cout << setw (4) << div2 << endl;

 

      cout << "------";

 

      cout << "\n";

 

     cin >> input;

 

      cout << "\n";

 

      if

 

      (input == divAnswer)

 

      cout << "Congratulations\n";

 

      else

 

      cout << "That is incorrect,\nThe correct answer is: " << divAnswer;

 

      cout << "\n";

 

      return 0;}

 

       

 

   else if (choice==5)

 

   {cout << "Thanks for playing\n";}

 

       

 

      else

 

     {cout << "You can only select options 1-5, run the program again and select a option 1-5\n";}

 

       }

 

       

 

      return 0;

 

       

 

      }

Re: How can I add a loop for this code
 

I was doing a similair problem, and with some help from people on here found that using a do-while loop with a switch instead of four if statements worked best. Check out the last page for some pointers...
http://www.daniweb.com/forums/thread159343.html

Re: How can I add a loop for this code
 

I tried to see what you did and tried it but it did not work.

Re: How can I add a loop for this code
 

Ok I just can not get the loop to work. I tried what was in the second post but it does not work. Please help. I am stuck on the code I already posted.

Thanks.