ios - 我需要4条If语句，然后如果所有条件都正确，则需要1条else语句

Question

您可能知道我对iOS开发非常陌生，并且有一个非常具体的问题。我需要编写一个在if中具有四个条件的if ... else语句，然后才执行实际操作。所以我需要做这样的事情:

如果(条件1 +条件2 +条件3 +条件4)
然后
{实际行动}
其他
……………………

当我尝试

-(IBAction)Buttontouched: (id) sender;
{
    if (NSOrderedSame == [self.InputField1.text caseInsensitiveCompare:@"teacher"]){
        if (NSOrderedSame == [self.InputField2.text caseInsensitiveCompare:@"Maths"]){
            if (NSOrderedSame == [self.InputField3.text caseInsensitiveCompare:@"english"]){
                if (NSOrderedSame == [self.InputField4.text caseInsensitiveCompare:@"greek"]){
                    NumberCount = NumberCount +5;
                    ErrorLabel.text = [NSString stringWithFormat:@"You have achived %i out of 50 points", >NumberCount];
                    April1.hidden = true;
                }
            }
        }
     }
}

它没有用.....请帮助我!

Answer 1

您可以执行此操作，仅在所有4条语句为true时才继续。

-(IBAction)Buttontouched: (id) sender {
    if ((NSOrderedSame == [self.InputField1.text caseInsensitiveCompare:@"teacher"]) &&
        (NSOrderedSame == [self.InputField2.text caseInsensitiveCompare:@"Maths"]) &&
        (NSOrderedSame == [self.InputField3.text caseInsensitiveCompare:@"english"]) &&
        (NSOrderedSame == [self.InputField4.text caseInsensitiveCompare:@"greek"])) 
    {     
        NumberCount = NumberCount +5; 
        ErrorLabel.text = [NSString stringWithFormat:@"You have achived %i out of 50 points", >NumberCount]; 
        April1.hidden = true;
    } else {

    }
}