正则表达式限制 账号 密码 邮箱 身份证 手机号的

#import <Foundation/Foundation.h>
int main() {
// ? == {0,1}
//  == {0,无穷}
// ＋ == {1,无穷}
// \d == [0-9]
// \w == [A-Za-z_0-9]
//  的意思是可有可无
// [a|b|c]+ 表示三个至少出现一次或多次
//检测电话号码是否正确
NSString tel = @"";
//正则表达式
NSString regex = @"^\\d$";
// NSString regex = @"^[0-9]{3,4}-[0-9]{7,8}$";
NSPredicate predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex];//创建需要满足上面的正则表达式的谓词
NSLog(@"该电话号码:%d",[predicate evaluateWithObject:tel]);
//用户名 （第一位必须是字母，6-16位，只能有字母，数字或下划线）
NSString user = @"m54355";
NSString regex1 = @"^[A-Za-z]\\w{5,15}$";
NSPredicate predicate1 = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex1];
// NSLog(@"该电话号码:%d",[predicate1 evaluateWithObject:user]);
// //身份证
// NSString user1 = @"610125199301300814";
// NSString regex2 = @"^\\d{17}[\\dxX]$";
// NSPredicate predicate2 = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex2];
// NSLog(@"该身份证:%d",[predicate2 evaluateWithObject:user1]);
//邮箱
NSString mailbox = @"101707383@qq.";
NSString regex3 = @"^[a-zA-Z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}$";
NSPredicate predicate3 = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex3];
// NSLog(@"该邮箱:%d",[predicate3 evaluateWithObject:mailbox]);
//手机号
// NSString phone = @"18709259205";
// NSString regex4 = @"^1[3|4|5|7|8]\\d{9}$";
// NSPredicate predicate4 = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex4];
// NSLog(@"该手机:%d",[predicate4 evaluateWithObject:phone]);
if ([predicate1 evaluateWithObject:user] == 1) {
if ([predicate3 evaluateWithObject:mailbox] == 1) {
NSLog(@"登录成功");
}
}else{
NSLog(@"错误");
}
return 0;
}