OC地址偏移-赋值
2019-03-12 本文已影响0人
朱云哲
NSInteger a = 1;
NSIntegerb =2;
NSInteger*c = (&a -1);
*c =3;
NSLog(@"&a %p",&a);
NSLog(@"&b %p",&b);
NSLog(@"&c %p",&c);
NSLog(@"&d %p",(&a -1));
NSLog(@"a %zd",a);
NSLog(@"b %zd",b);
2019-03-12 23:30:59.627980+0800 Test-day1[64413:612081] &a 0x7ffee82859b8
2019-03-12 23:30:59.628217+0800 Test-day1[64413:612081] &b 0x7ffee82859b0
2019-03-12 23:30:59.628365+0800 Test-day1[64413:612081] &c 0x7ffee82859a8
2019-03-12 23:30:59.628495+0800 Test-day1[64413:612081] &d 0x7ffee82859b0
2019-03-12 23:30:59.628691+0800 Test-day1[64413:612081] a 1
2019-03-12 23:30:59.628807+0800 Test-day1[64413:612081] b 3
