IOS uses NSStringFromCGRect when printing frame values.

The format of NSLog is as follows:

% @ objects

%d, %i integer

%hi short integer

%lli long integer

%u unsigned shaping

%f floating point/doubleword

A %0.2f floating-point number with only two decimal places.

%x, %X binary integer

%o octal integer

%zu size_t

%p pointer

%e floating point/double word (scientific calculation)

%g floating-point/double-word technology method (using the shortest method)

%s C (character) string

%. Pascal string

%c character

%C unichar

%lld 64-bit long integer (long long)

%llu unsigned 64-bit long integer

%Lf 64-bit doubleword

%lu sizeof(i) Number of bytes in memory

There are some similar objects, such as CGRect, CGSize and so on.

Print CGRect:

NSLog(@“% @”，NSStringFromCGRect(some cgrect))；

Print CGSize:

NSLog(@“% @”，NSStringFromCGSize(some CG Size))；

The others are: