手把手教你使用正则表达式验证银行帐号

// 使用正则表达式验证BANK ACCOUNT NUMBER的C++程序

#include <iostream>
#include <regex>
using namespace std;

// 验证银行账号的功能
bool isValid_Bank_Acc_Number(string bank_account_number)
{

	const regex pattern("^[0-9]{9,18}$");
	if (bank_account_number.empty()) {
		return false;
	}
	if (regex_match(bank_account_number, pattern))
	{
		return true;
	}
	else
	{
		return false;
	}
}

void print(bool value){	
	cout<<"Is this account valid: ";	
	if(value)
		cout<<"True"<<endl;
	else
		cout<<"False"<<endl;
}

int main()
{
	string str1 = "635802010014976";
	print(isValid_Bank_Acc_Number(str1));

	string str2 = "9136812895_";
	print(isValid_Bank_Acc_Number(str2));

	string str3 = "BNZAA2318JM";
	print(isValid_Bank_Acc_Number(str3));
	
	string str4 = " 934517865";
	print(isValid_Bank_Acc_Number(str4));

	string str5 = "UBIN0563587";
	print(isValid_Bank_Acc_Number(str5));
	
	string str6 = "654294563";
	print(isValid_Bank_Acc_Number(str6));

	return 0;
}