Objective-c level-3

1 if

Mrhiggieismean = NO; if (Mrhiggieismean) {  NSLog (@ "confirmed:he is super mean");}

2 if Else

BOOL Mrhiggieismean = [Mrhiggie Areyoumean]; if (Mrhiggieismean) {  NSLog (@ "confirmed:he is super mean");} Else {  NSLog (@ "No, actually he ' s reallynice");}

3 If-else If-else

NSNumber *meannessscale =[Mrhiggie Meannessscale];if([Meannessscale Intvalue] <4) {NSLog (@"Mr. Higgie is on the nice side");} Else if([Meannessscale Intvalue] <8) {NSLog (@"Mr. Higgie is sorta nice and not really");} Else{NSLog (@"Mr. Higgie is definitely mean");}

4 Equal Strings

Passed to isequaltostring: compares two nsstring, returns True if same, and returns false instead.

Can be used in the conditional judgment of if:

if ([myString isequaltostring:otherstring]) {  NSLog (@ "Hello from inside the if! " );}

5 Switch case

Nsinteger Day =GetDayOfWeek ();Switch(day) { Case 1: {NSLog (@"Monday");  Break; }   Case 2: {NSLog (@"Tuesday");  Break; }  /*snip Wednesday through Saturday*/   Case 7: {NSLog (@"Sunday");  Break; }}

6 Switch on Enums

The flash used by switch is used in conjunction with enumerations.

typedef ns_enum (Nsinteger, DayOfWeek) {    1,    2,    3 ,     4 ,     5 ,     6 ,     7 };

Objective-c level-3