int menu (void){
   int choice;
   //menu Declarations

   int accountNum1;
   int accountNum2;
   float balance1;
   float balance2;
   //newAccounts Declarations

   int tmp=0;
   int w;
   //withdraw Declaraions
   while(1==1){
      printf("\n--------------------------------\nMain Menu\n");
      printf("\n1 New Accounts\n2 All Accounts\n3 Withdraw\n4 Deposit\n5 Transfer Fund\n6 Exchange Balance\n7 High Balance");
      printf("\n8 Reset All Balance\n9 Change Account Number\n0 Exit\n");
   //menu format

      scanf("%d", &choice);
      switch(choice){
         case 1: new_accounts(&accountNum1, &balance1, &accountNum2, &balance2);
            break;
         case 2: summary(accountNum1, balance1, accountNum2, balance2);
            break;
         case 3:

            while((tmp!=accountNum1)&&(tmp!=accountNum2)){

               printf("Enter an account to withdraw (%d or %d?): ", accountNum1,accountNum2);
               scanf("%d", &tmp);


               if((tmp!=accountNum1)&&(tmp!=accountNum2))

                  printf("invalid account number.\n");


            }
            printf("Enter an amount to withdraw: ");
            scanf("%d", &w);

         //input validation

            if (tmp== accountNum1){
               withdraw(accountNum1, &balance1, w);
            }
            else{
               withdraw(accountNum2, &balance2, w);
            }

            break;
         /*
         case 4:
            while((tmp!=accountNum1)||(tmp!=accountNum2)){

               printf("Enter an account to deposit (%d or %d?): ", accountNum1,accountNum2);
               scanf("%d", &tmp);

               printf("Enter an amount to deposit: ");
               scanf("%d", &tmp);

               if((tmp!=accountNum1)&&(tmp!=accountNum2))
                  printf("invalid account number.\n");
            }
         //input validation

            if (tmp== accountNum1){
               withdraw(accountNum1, &balance1, tmp);
            }
            else{
               withdraw(accountNum2, &balance2, tmp);
            }

            break;
         /*
      case 5: transfer();
         break;
      case 6: exchange();
         break;
      case 7: *high_balance();
         break;
      case 8:  reset();
         break;
      case 9: change();
         break;
         */
         case 0: exit(0);
            printf("Goodbye!");
            break;
         default: printf("invalid input");
            break;
      }

   }
}