我正在尝试从这个创建的数组Customer中删除信息。该数组包含信息，名、姓、checkingbalance、savingsbalance、moneymarketbalance、帐号和余额。这些信息将被保存并在以后调用。我必须能够删除它们，并且我希望使用帐号来完成此操作。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct Customer
{
    char FirstName[100];
    char LastName[100];
    int CheckingBalance;
    int SavingsBalance;
    int MoneyMarketBalance;
    int AccountNumber;
    float Balance;
};

struct Customer customer[20]; 

int NumOfAccounts;
 
void NewAccount()
{
    char FirstName[100];
    char LastName[100];
    int CheckingBalance;
    int SavingsBalance;
    int MoneyMarketBalance;
    int AccountNumber;
    float Balance = 0;

    printf("You have chosen that you want to become a new member of Global Bank! Please enter your first name:\n");
    scanf("%s", FirstName);
    printf("Thank you! Now please enter your last name:\n");
    scanf("%s", LastName);
    printf("Thank you %s %s for entering your name!", FirstName, LastName);
    printf("\nEnter how much would you like to deposit into your checking account: \n");
    scanf("%d", &CheckingBalance); 
    printf("Thank you %s for your initial deposit of %d!", FirstName, CheckingBalance);
    printf("\nEnter how much would you like to deposit into your savings account: \n");
    scanf("%d", &SavingsBalance); 
    printf("Thank you %s for your initial deposit of %d!", FirstName, SavingsBalance);
    printf("\nEnter how much would you like to deposit into your Money Market account: \n");
    scanf("%d", &MoneyMarketBalance); 
    printf("Thank you %s for your initial deposit of %d!", FirstName, MoneyMarketBalance);
    printf("\nNow choose your custom account number: \n");
    scanf("%d", &AccountNumber);
    printf("\nWelcome %s %s to Global Bank. Your account number is %d your initial balance in your checking is %d and your initial balance in your savings is %d.", FirstName, LastName, AccountNumber, CheckingBalance, SavingsBalance);
    printf("\n\nIf you would like to check the bank balance of your account press '2'. \nIf you would like to close your account, press '3'. \nIf you would like to make a deposit, press '4'. \nIf you would like to make a withdrawal, press '5'. \nIf you would like to check all members last names, press '6'. \nIf you would like to exit press '7'.\n"); 

    strcpy(customer[AccountNumber-1].FirstName,FirstName);
    strcpy(customer[AccountNumber-1].LastName,LastName);
    (customer[AccountNumber-1].AccountNumber=AccountNumber);
    (customer[AccountNumber-1].CheckingBalance=CheckingBalance);
    (customer[AccountNumber-1].SavingsBalance=SavingsBalance);
    (customer[AccountNumber-1].MoneyMarketBalance=MoneyMarketBalance);

    NumOfAccounts++;
}

void CloseAccount()
{
char FirstName[100];
char LastName[100];
int CheckingBalance;
int SavingsBalance;
int MoneyMarketBalance;
int AccountNumber;
int i;
printf("\nYou have chosen that you want to close your account. Enter your account number: \n");
scanf("%d", &customer->AccountNumber);
while (1)
{
memset(&customer[AccountNumber-1], 0, sizeof customer[AccountNumber-1]);
break;
}
printf("\nYou have closed your account. We are sad to see you go.\n");
}
}

int main()
{

    int choice;
    printf("Welcome to the Global Bank app! \nIf you would like to become a new member, press '1'. \nIf you would like to check the bank balance of your account press '2'. \nIf you would like to close your account, press '3'. \nIf you would like to make a deposit, press '4'. \nIf you would like to make a withdrawal, press '5'. \nIf you would like to check all members last names, press '6'. \nIf you would like to exit press '7'.\n"); 
    while(1){
        scanf("%d", &choice);
        switch(choice)
        {
            case 1:
            NewAccount();
            break;

            case 2:
            case 3:
                CloseAccount();
            case 4:
            break;
            case 5:

            break;
            case 6:

            case 7:
            printf("Have a good day and thank you for banking with Global Bank!\n");
            exit(0);
        }
    }
}

目前我想不出办法来做（可能是因为太晚了）。还有这些是什么：

strcpy(customer[AccountNumber-1].LastName,LastName);
(customer[AccountNumber-1].AccountNumber=AccountNumber);

我不知道如何在网上搜索他们，我想这有点妨碍我。
附言：
如果问题的格式有任何问题，请不要关闭这个帖子，我一直在处理程序的其他部分，我会在醒来时修复格式。谢谢