A brief summary of C language printf output integer formatter

1. Integer type

32 Bit compiler ：

int 4 byte 
long 4 byte 
long long 8 byte 

64 Bit compiler :

int 4 byte 
long 8 byte 
long long 8 byte 

2. Integer output

%d  The output is  int,
%ld  The output is  long,
%lld  The output is  long long;

 If it is an unsigned type ： The above d It is amended as follows u

• Reference resources ：C 64bit Of longlong printf Format symbol %u、%d、%lld、%llx、%#llx, Talking about %d, %ld, %lld difference