Dear all,
I m a newbie in C. When do the questions in "C Programming for Absolute Beginners" (MICHAEL VINE, 2008)
When talked about structure programming, there is a question.
Write A function that prints an ATM menu—it receives no
parameters and returns no value.
Then i write the following:
Code:Void displaymenu() /********************* Function Prototypes *********************/ Int display_balance(); Int deposit_funds(); Int transfer_funds(); Int withdraw_funds(); Int get_available_balance(); Int compare_balance_to_request(); Int update_account(); Int disperse_funds(); Int reject_request(); Int print_receipt(); Int verify_ample_funds_exist(); Int initiate_mechanical_process(); Int update_bank_records(); Int atm_lv1() = 0; Int atm_lv2() =0; Int atm_lv3() =0; main() { Do { System(“Clear”); Printf(“\n\t Welcome to ATM\n\n”); Printf(“1\tDisplay Balance\n”); Printf(“2\tDeposit Funds\n”); Printf(“3\tTransfer Funds\n”); Printf(“4\tWithdraw Funds\n”); Printf(“5\tQuit\n”); Printf(“\n\n Choose number\n”); Scanf(“%d”, &atm_lv1); Switch(atm_lv1) { Case 1: Int display_balance(); // Suppose another function calling for the account? Printf(“Your Balance is”); Break; Case 2: Int Deposit_funds(); //another interface to detect the amount of banknotes? Break; Case 3: Int Transfer_funds(); //Transfer the amount of fund, enter another account Break; Case 4: Int Withdraw_fund(); Break; } } while (atm_lv1!=5); }// end of ATM level 1 /*************** Function Definition ****************/ //display balance Int display_balance(); { Printf(“Your account balance is”); } //disposit fund Int Deposit_funds(); { Printf(“You have deposit to your account”); } //transfer fund Int transfer_funds(); { Printf(“You have transferred funds”); } //withdraw fund Int withdraw_funds(); { Do { System(“Clear”); Printf(“\n\t Withdraw funds options \n\n”); Printf(“1\tGet Available Balance\n”); Printf(“2\tCompare Balance to Request\n”); Printf(“3\tUpdate Account\n”); Printf(“4\tDisperse Funds\n”); Printf(“5\tReject Request\n”); Printf(“6\tPrint Receipt\n”); Printf(“7\tReturn\n”); Printf(“\n\n Choose number\n”); Scanf(“%d”, &atm_lv2); Switch(atm_lv2) { Case 1: Int get_available_balance(); Break; Case 2: Int compare_balance_to_request(); Break; Case 3: Int update_account (); Break; Case 4: Int disperse_fund(); Break; Case 5: Int reject_request(); Break; Case 6: Int print_receipt(); Break; Case 7: Int main(); Break; } } while (atm_lv2!=8); }// end of ATM level 2 /*************** Function Definition ****************/ //Get available balance Int get_available_balance(); { Printf(“Your available balance is”); } //Compare balance to request Int compare_balance_to_request(); { Printf(“Your balance is compared”); } //update account Int update_account(); { Printf(“Your account is updated”); } //disperse funds Int disperse_fund(int); { Do { System(“Clear”); Printf(“\n\t Select the Disperse Funds Action”); Printf(“1\tVerify Ample Fund\n”); Printf(“2\tInitiate Mechanical Process\n”); Printf(“3\tUpdate Bank Record\n”); Scanf(“%d”,&atm_lv3); Switch(atm_lv3){ Case 1: Int verify_ample_funds_exist(); Case 2: Int initiate_mechanical_process(); Case 3: Int update_bank_records(); } while(atm_lv3!=4); } //end of atm lv3 //reject request Int reject_request(int); { Printf(“Your request is rejected”); } //print receipt Int print_receipt(); { Printf(“Your receipt is being printed”); } //Verify amply funds Int verify_ample_funds_exist(); { Printf(“Your fund is verified”); } //initiate mechanical process Int initiate_mechanical_process(); { Printf(“Mechanical process initiated”); } //update bank record Int update_bank_records(); { Printf(“Bank records updated”); }