CLinux

C

C(1)

C

()()

C(2)

sizeof sizeof ( int)

sizeof

3264Windows7

3264X86 CPU

81632ARM

Turbo CkeilGCC-32GCC-64

gcc m323264

gcc m646432

C(3)

i=1,j=2;

printf(%d\n, i++*i++);

i+++j;

C(4)

C-freeGCCVC++6.0visual studio

VC++6.0console.cpp.c

int main()

{

int i; //

int a[0];

printf("hello world!\n");

int j;

for(int k=0;k

C(5)

Linux int * data_copy ( int *p)

{

int buffer[8192*1024];

memcpy ( buffer, p, 8192*1024);

return buffer;

}

C(6)

Linux(Linux4.4) #define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __func__,

__LINE__, ## args)

#define container_of(ptr, type, member) ({ \

const typeof(((type *)0)->member) * __mptr = (ptr); \

(type *)((char *)__mptr - offsetof(type, member)); })

struct urb { struct usb_iso_packet_descriptor iso_frame_desc[0];}

urb->transfer_flags &= ~(URB_DIR_MASK | URB_DMA_MAP_SINGLE |URB_DMA_MAP_PAGE );

Linux

C(6)

staticinline

volatileconst

#definetypedef

C

C

C

C

C

C

C

C

C

C

I/O

Linux

Linux

C

C

Linux

C

@

QQ475504428

QQ 3284757626