(Day 1) object-C enumeration and struct

The enumerated types in object-C can only be integer types, such as int long short bool (true and false are essentially 1 and 0.

The data in the struct cannot be assigned an initial value, so the value assignment can only be declared.

# Import <Foundation/Foundation. h> Enum sex {male = 0, female = 1}; typedef Enum {c = 3, D = 4} Test2; struct student {char * Name; Enum sex; int age ;}; typedef struct student Stu; int main (INT argc, const char * argv []) {Stu Su; Su. name = "Wen"; Su. sex = male; nslog (@ "name = % s, sex = % d", Su. name, Su. sex); @ autoreleasepool {// insert code here... nslog (@ "Hello, world! ");} Return 0 ;}