View The Console Window
Menu > Run > Console
Write string to the console
NSLog(@"hi");
NSLog(@"This is the string being used: %@", MyStringName);
NSLog(@"%d", SomeVariable); //Display decimal variable
NSLog(@"%d", SomeBool); //Display boolean variable
NSLog(@"%@", SomeDate); //Display Date variable
NSLog(@"%f, %f, %f", [accel x], [accel y], [accel z]); //Display float values
NSLog(@"%0.2f", SomeFloat); //Display float variable to 2 decimal places
NSLog(@"%lu", (unsigned long)[SomeVariable retainCount])); //Display variables retain count
//To avoid the warning you must use the (unsigned long) to cast variables which are not
NSLog(@"%c", SomeVariable); //Display Char from variable