- (void)viewDidLoad{[super viewDidLoad];// Do any additional setup after loading the view.NSString *sex=[self sexStrFromIdentityCard:@"139876456767892345"];NSLog(@"--sex--%@",sex);}//由身份證號(hào)返回為性別-(NSString *)sexStrFromIdentityCard:(NSString *)numberStr{NSString *result = nil;BOOL isAllNumber = YES;if([numberStr length]<17)return result;//**截取第17為性別識(shí)別符NSString *fontNumer = [numberStr substringWithRange:NSMakeRange(16, 1)];//**檢測是否是數(shù)字;const char *str = [fontNumer UTF8String];const char *p = str;while (*p!='/0') {if(!(*p>='0'&&*p<='9'))isAllNumber = NO;p++;}if(!isAllNumber)return result;int sexNumber = [fontNumer integerValue];if(sexNumber%2==1)result = @"男";///result = @"M";else if (sexNumber%2==0)result = @"女";//result = @"F";return result;}